| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Henrique de Moraes Holschuh | 27297 | 70.86% | 215 | 60.73% |
| Ognjen Galic | 1685 | 4.37% | 1 | 0.28% |
| Johannes Berg | 1441 | 3.74% | 1 | 0.28% |
| Len Brown | 1032 | 2.68% | 5 | 1.41% |
| Borislav Deianov | 825 | 2.14% | 1 | 0.28% |
| Pali Rohár | 633 | 1.64% | 1 | 0.28% |
| Bastien Nocera | 578 | 1.50% | 5 | 1.41% |
| Alexander Schremmer | 409 | 1.06% | 1 | 0.28% |
| Jiaxun Yang | 386 | 1.00% | 2 | 0.56% |
| Benjamin Berg | 368 | 0.96% | 3 | 0.85% |
| David Henningsson | 342 | 0.89% | 1 | 0.28% |
| Jouke Witteveen | 316 | 0.82% | 4 | 1.13% |
| Takashi Iwai | 298 | 0.77% | 5 | 1.41% |
| Alexey Dobriyan | 292 | 0.76% | 2 | 0.56% |
| Andrew Lutomirski | 287 | 0.75% | 2 | 0.56% |
| Shuduo Sang | 267 | 0.69% | 2 | 0.56% |
| Stephen Chandler Paul | 189 | 0.49% | 2 | 0.56% |
| Dennis Wassenberg | 187 | 0.49% | 1 | 0.28% |
| Joe Perches | 174 | 0.45% | 3 | 0.85% |
| Christian Kellner | 170 | 0.44% | 2 | 0.56% |
| Marco Trevisan (Treviño) | 128 | 0.33% | 1 | 0.28% |
| Jeremy Fitzhardinge | 117 | 0.30% | 1 | 0.28% |
| Hans de Goede | 109 | 0.28% | 5 | 1.41% |
| Adam Lee | 105 | 0.27% | 3 | 0.85% |
| Aaron Lu | 94 | 0.24% | 1 | 0.28% |
| Manoj Iyer | 82 | 0.21% | 4 | 1.13% |
| Björn Mork | 69 | 0.18% | 1 | 0.28% |
| Alan Jenkins | 54 | 0.14% | 2 | 0.56% |
| Andy Shevchenko | 52 | 0.13% | 2 | 0.56% |
| Thomas Renninger | 46 | 0.12% | 2 | 0.56% |
| Behan Webster | 37 | 0.10% | 1 | 0.28% |
| Matthew Garrett | 33 | 0.09% | 2 | 0.56% |
| Rusty Russell | 30 | 0.08% | 2 | 0.56% |
| Rafael J. Wysocki | 29 | 0.08% | 3 | 0.85% |
| Holger Macht | 25 | 0.06% | 1 | 0.28% |
| Fuqian Huang | 25 | 0.06% | 1 | 0.28% |
| Thomas Weißschuh | 24 | 0.06% | 1 | 0.28% |
| Greg Kroah-Hartman | 22 | 0.06% | 1 | 0.28% |
| David Herrmann | 21 | 0.05% | 1 | 0.28% |
| Tejun Heo | 19 | 0.05% | 3 | 0.85% |
| Dan Carpenter | 19 | 0.05% | 4 | 1.13% |
| Rui Zhang | 17 | 0.04% | 1 | 0.28% |
| Stanislav Fomichev | 15 | 0.04% | 1 | 0.28% |
| Seth Forshee | 15 | 0.04% | 1 | 0.28% |
| Michael Buesch | 12 | 0.03% | 1 | 0.28% |
| Li Dongyang | 12 | 0.03% | 2 | 0.56% |
| Hui Wang | 10 | 0.03% | 1 | 0.28% |
| Eric Curtin | 9 | 0.02% | 1 | 0.28% |
| Pavel Machek | 8 | 0.02% | 2 | 0.56% |
| Alexander Kappner | 8 | 0.02% | 1 | 0.28% |
| Xavier Naveira | 8 | 0.02% | 1 | 0.28% |
| Kay Sievers | 8 | 0.02% | 1 | 0.28% |
| Richard Hartmann | 8 | 0.02% | 1 | 0.28% |
| Lv Zheng | 7 | 0.02% | 1 | 0.28% |
| Corentin Chary | 7 | 0.02% | 1 | 0.28% |
| Al Viro | 7 | 0.02% | 3 | 0.85% |
| Jesper Juhl | 5 | 0.01% | 1 | 0.28% |
| André Goddard Rosa | 5 | 0.01% | 1 | 0.28% |
| Darren Hart | 4 | 0.01% | 1 | 0.28% |
| Kees Cook | 4 | 0.01% | 2 | 0.56% |
| Roel Kluin | 3 | 0.01% | 3 | 0.85% |
| Rasmus Villemoes | 3 | 0.01% | 1 | 0.28% |
| Eric W. Biedermann | 3 | 0.01% | 1 | 0.28% |
| Gustavo A. R. Silva | 2 | 0.01% | 1 | 0.28% |
| Thomas Gleixner | 2 | 0.01% | 1 | 0.28% |
| Uwe Kleine-König | 2 | 0.01% | 2 | 0.56% |
| Adrian Bunk | 2 | 0.01% | 1 | 0.28% |
| Mathias Krause | 2 | 0.01% | 1 | 0.28% |
| Lucas De Marchi | 2 | 0.01% | 1 | 0.28% |
| Cyrill V. Gorcunov | 1 | 0.00% | 1 | 0.28% |
| Paul Bolle | 1 | 0.00% | 1 | 0.28% |
| Mariusz Kozlowski | 1 | 0.00% | 1 | 0.28% |
| Andi Kleen | 1 | 0.00% | 1 | 0.28% |
| Jean Delvare | 1 | 0.00% | 1 | 0.28% |
| Harvey Harrison | 1 | 0.00% | 1 | 0.28% |
| Jeff Garzik | 1 | 0.00% | 1 | 0.28% |
| Tobias Klauser | 1 | 0.00% | 1 | 0.28% |
| Colin Ian King | 1 | 0.00% | 1 | 0.28% |
| Jens Taprogge | 1 | 0.00% | 1 | 0.28% |
| Lionel Debroux | 1 | 0.00% | 1 | 0.28% |
| Mathieu Chouquet-Stringer | 1 | 0.00% | 1 | 0.28% |
| Axel Lin | 1 | 0.00% | 1 | 0.28% |
| Lad Prabhakar | 1 | 0.00% | 1 | 0.28% |
| Zhang Xianwei | 1 | 0.00% | 1 | 0.28% |
| Linus Torvalds | 1 | 0.00% | 1 | 0.28% |
| Tony Jones | 1 | 0.00% | 1 | 0.28% |
| Total | 38523 | 354 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * thinkpad_acpi.c - ThinkPad ACPI Extras * * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define TPACPI_VERSION "0.26" #define TPACPI_SYSFS_VERSION 0x030000 /* * Changelog: * 2007-10-20 changelog trimmed down * * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to * drivers/misc. * * 2006-11-22 0.13 new maintainer * changelog now lives in git commit history, and will * not be updated further in-file. * * 2005-03-17 0.11 support for 600e, 770x * thanks to Jamie Lentin <lentinj@dial.pipex.com> * * 2005-01-16 0.9 use MODULE_VERSION * thanks to Henrik Brix Andersen <brix@gentoo.org> * fix parameter passing on module loading * thanks to Rusty Russell <rusty@rustcorp.com.au> * thanks to Jim Radford <radford@blackbean.org> * 2004-11-08 0.8 fix init error case, don't return from a macro * thanks to Chris Wright <chrisw@osdl.org> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/types.h> #include <linux/string.h> #include <linux/list.h> #include <linux/mutex.h> #include <linux/sched.h> #include <linux/sched/signal.h> #include <linux/kthread.h> #include <linux/freezer.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/nvram.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/sysfs.h> #include <linux/backlight.h> #include <linux/bitops.h> #include <linux/fb.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/input.h> #include <linux/leds.h> #include <linux/rfkill.h> #include <linux/dmi.h> #include <linux/jiffies.h> #include <linux/workqueue.h> #include <linux/acpi.h> #include <linux/pci.h> #include <linux/power_supply.h> #include <sound/core.h> #include <sound/control.h> #include <sound/initval.h> #include <linux/uaccess.h> #include <acpi/battery.h> #include <acpi/video.h> /* ThinkPad CMOS commands */ #define TP_CMOS_VOLUME_DOWN 0 #define TP_CMOS_VOLUME_UP 1 #define TP_CMOS_VOLUME_MUTE 2 #define TP_CMOS_BRIGHTNESS_UP 4 #define TP_CMOS_BRIGHTNESS_DOWN 5 #define TP_CMOS_THINKLIGHT_ON 12 #define TP_CMOS_THINKLIGHT_OFF 13 /* NVRAM Addresses */ enum tp_nvram_addr { TP_NVRAM_ADDR_HK2 = 0x57, TP_NVRAM_ADDR_THINKLIGHT = 0x58, TP_NVRAM_ADDR_VIDEO = 0x59, TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, TP_NVRAM_ADDR_MIXER = 0x60, }; /* NVRAM bit masks */ enum { TP_NVRAM_MASK_HKT_THINKPAD = 0x08, TP_NVRAM_MASK_HKT_ZOOM = 0x20, TP_NVRAM_MASK_HKT_DISPLAY = 0x40, TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, TP_NVRAM_MASK_THINKLIGHT = 0x10, TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, TP_NVRAM_MASK_MUTE = 0x40, TP_NVRAM_MASK_HKT_VOLUME = 0x80, TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, TP_NVRAM_POS_LEVEL_VOLUME = 0, }; /* Misc NVRAM-related */ enum { TP_NVRAM_LEVEL_VOLUME_MAX = 14, }; /* ACPI HIDs */ #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" #define TPACPI_ACPI_EC_HID "PNP0C09" /* Input IDs */ #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ #define TPACPI_HKEY_INPUT_VERSION 0x4101 /* ACPI \WGSV commands */ enum { TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ }; /* TP_ACPI_WGSV_GET_STATE bits */ enum { TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ }; /* HKEY events */ enum tpacpi_hkey_event_t { /* Hotkey-related */ TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ /* Reasons for waking up from S3/S4 */ TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ /* Auto-sleep after eject request */ TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ /* Misc bay events */ TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock or port replicator */ TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug dock or port replicator */ /* User-interface events */ TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): * enter/leave tablet mode */ TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ /* Key-related user-interface events */ TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ /* Thermal events */ TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set * command completed. Related to * AML DYTC */ TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation * changed. Related to AML GMTS */ /* AC-related events */ TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ /* Further user-interface events */ TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ /* Misc */ TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ }; /**************************************************************************** * Main driver */ #define TPACPI_NAME "thinkpad" #define TPACPI_DESC "ThinkPad ACPI Extras" #define TPACPI_FILE TPACPI_NAME "_acpi" #define TPACPI_URL "http://ibm-acpi.sf.net/" #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" #define TPACPI_PROC_DIR "ibm" #define TPACPI_ACPI_EVENT_PREFIX "ibm" #define TPACPI_DRVR_NAME TPACPI_FILE #define TPACPI_DRVR_SHORTNAME "tpacpi" #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" #define TPACPI_WORKQUEUE_NAME "ktpacpid" #define TPACPI_MAX_ACPI_ARGS 3 /* Debugging printk groups */ #define TPACPI_DBG_ALL 0xffff #define TPACPI_DBG_DISCLOSETASK 0x8000 #define TPACPI_DBG_INIT 0x0001 #define TPACPI_DBG_EXIT 0x0002 #define TPACPI_DBG_RFKILL 0x0004 #define TPACPI_DBG_HKEY 0x0008 #define TPACPI_DBG_FAN 0x0010 #define TPACPI_DBG_BRGHT 0x0020 #define TPACPI_DBG_MIXER 0x0040 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) /**************************************************************************** * Driver-wide structs and misc. variables */ struct ibm_struct; struct tp_acpi_drv_struct { const struct acpi_device_id *hid; struct acpi_driver *driver; void (*notify) (struct ibm_struct *, u32); acpi_handle *handle; u32 type; struct acpi_device *device; }; struct ibm_struct { char *name; int (*read) (struct seq_file *); int (*write) (char *); void (*exit) (void); void (*resume) (void); void (*suspend) (void); void (*shutdown) (void); struct list_head all_drivers; struct tp_acpi_drv_struct *acpi; struct { u8 acpi_driver_registered:1; u8 acpi_notify_installed:1; u8 proc_created:1; u8 init_called:1; u8 experimental:1; } flags; }; struct ibm_init_struct { char param[32]; int (*init) (struct ibm_init_struct *); umode_t base_procfs_mode; struct ibm_struct *data; }; static struct { u32 bluetooth:1; u32 hotkey:1; u32 hotkey_mask:1; u32 hotkey_wlsw:1; enum { TP_HOTKEY_TABLET_NONE = 0, TP_HOTKEY_TABLET_USES_MHKG, TP_HOTKEY_TABLET_USES_GMMS, } hotkey_tablet; u32 kbdlight:1; u32 light:1; u32 light_status:1; u32 bright_acpimode:1; u32 bright_unkfw:1; u32 wan:1; u32 uwb:1; u32 fan_ctrl_status_undef:1; u32 second_fan:1; u32 beep_needs_two_args:1; u32 mixer_no_level_control:1; u32 battery_force_primary:1; u32 input_device_registered:1; u32 platform_drv_registered:1; u32 platform_drv_attrs_registered:1; u32 sensors_pdrv_registered:1; u32 sensors_pdrv_attrs_registered:1; u32 sensors_pdev_attrs_registered:1; u32 hotkey_poll_active:1; u32 has_adaptive_kbd:1; } tp_features; static struct { u16 hotkey_mask_ff:1; u16 volume_ctrl_forbidden:1; } tp_warned; struct thinkpad_id_data { unsigned int vendor; /* ThinkPad vendor: * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ u32 ec_model; u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ u16 ec_release; char *model_str; /* ThinkPad T43 */ char *nummodel_str; /* 9384A9C for a 9384-A9C model */ }; static struct thinkpad_id_data thinkpad_id; static enum { TPACPI_LIFE_INIT = 0, TPACPI_LIFE_RUNNING, TPACPI_LIFE_EXITING, } tpacpi_lifecycle; static int experimental; static u32 dbg_level; static struct workqueue_struct *tpacpi_wq; enum led_status_t { TPACPI_LED_OFF = 0, TPACPI_LED_ON, TPACPI_LED_BLINK, }; /* tpacpi LED class */ struct tpacpi_led_classdev { struct led_classdev led_classdev; int led; }; /* brightness level capabilities */ static unsigned int bright_maxlvl; /* 0 = unknown */ #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES static int dbg_wlswemul; static bool tpacpi_wlsw_emulstate; static int dbg_bluetoothemul; static bool tpacpi_bluetooth_emulstate; static int dbg_wwanemul; static bool tpacpi_wwan_emulstate; static int dbg_uwbemul; static bool tpacpi_uwb_emulstate; #endif /************************************************************************* * Debugging helpers */ #define dbg_printk(a_dbg_level, format, arg...) \ do { \ if (dbg_level & (a_dbg_level)) \ printk(KERN_DEBUG pr_fmt("%s: " format), \ __func__, ##arg); \ } while (0) #ifdef CONFIG_THINKPAD_ACPI_DEBUG #define vdbg_printk dbg_printk static const char *str_supported(int is_supported); #else static inline const char *str_supported(int is_supported) { return ""; } #define vdbg_printk(a_dbg_level, format, arg...) \ do { if (0) no_printk(format, ##arg); } while (0) #endif static void tpacpi_log_usertask(const char * const what) { printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), what, task_tgid_vnr(current)); } #define tpacpi_disclose_usertask(what, format, arg...) \ do { \ if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ what, task_tgid_vnr(current), ## arg); \ } \ } while (0) /* * Quirk handling helpers * * ThinkPad IDs and versions seen in the field so far are * two or three characters from the set [0-9A-Z], i.e. base 36. * * We use values well outside that range as specials. */ #define TPACPI_MATCH_ANY 0xffffffffU #define TPACPI_MATCH_ANY_VERSION 0xffffU #define TPACPI_MATCH_UNKNOWN 0U /* TPID('1', 'Y') == 0x3159 */ #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) #define TPVER TPID #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ { .vendor = PCI_VENDOR_ID_IBM, \ .bios = TPID(__id1, __id2), \ .ec = TPACPI_MATCH_ANY, \ .quirks = (__quirk) } #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ { .vendor = PCI_VENDOR_ID_LENOVO, \ .bios = TPID(__id1, __id2), \ .ec = TPACPI_MATCH_ANY, \ .quirks = (__quirk) } #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ { .vendor = PCI_VENDOR_ID_LENOVO, \ .bios = TPID3(__id1, __id2, __id3), \ .ec = TPACPI_MATCH_ANY, \ .quirks = (__quirk) } #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ { .vendor = PCI_VENDOR_ID_IBM, \ .bios = TPACPI_MATCH_ANY, \ .ec = TPID(__id1, __id2), \ .quirks = (__quirk) } #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ { .vendor = PCI_VENDOR_ID_LENOVO, \ .bios = TPACPI_MATCH_ANY, \ .ec = TPID(__id1, __id2), \ .quirks = (__quirk) } struct tpacpi_quirk { unsigned int vendor; u32 bios; u32 ec; unsigned long quirks; }; /** * tpacpi_check_quirks() - search BIOS/EC version on a list * @qlist: array of &struct tpacpi_quirk * @qlist_size: number of elements in @qlist * * Iterates over a quirks list until one is found that matches the * ThinkPad's vendor, BIOS and EC model. * * Returns 0 if nothing matches, otherwise returns the quirks field of * the matching &struct tpacpi_quirk entry. * * The match criteria is: vendor, ec and bios much match. */ static unsigned long __init tpacpi_check_quirks( const struct tpacpi_quirk *qlist, unsigned int qlist_size) { while (qlist_size) { if ((qlist->vendor == thinkpad_id.vendor || qlist->vendor == TPACPI_MATCH_ANY) && (qlist->bios == thinkpad_id.bios_model || qlist->bios == TPACPI_MATCH_ANY) && (qlist->ec == thinkpad_id.ec_model || qlist->ec == TPACPI_MATCH_ANY)) return qlist->quirks; qlist_size--; qlist++; } return 0; } static inline bool __pure __init tpacpi_is_lenovo(void) { return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; } static inline bool __pure __init tpacpi_is_ibm(void) { return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; } /**************************************************************************** **************************************************************************** * * ACPI Helpers and device model * **************************************************************************** ****************************************************************************/ /************************************************************************* * ACPI basic handles */ static acpi_handle root_handle; static acpi_handle ec_handle; #define TPACPI_HANDLE(object, parent, paths...) \ static acpi_handle object##_handle; \ static const acpi_handle * const object##_parent __initconst = \ &parent##_handle; \ static char *object##_paths[] __initdata = { paths } TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ /* T4x, X31, X40 */ "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ "\\CMS", /* R40, R40e */ ); /* all others */ TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ "^HKEY", /* R30, R31 */ "HKEY", /* all others */ ); /* 570 */ /************************************************************************* * ACPI helpers */ static int acpi_evalf(acpi_handle handle, int *res, char *method, char *fmt, ...) { char *fmt0 = fmt; struct acpi_object_list params; union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; struct acpi_buffer result, *resultp; union acpi_object out_obj; acpi_status status; va_list ap; char res_type; int success; int quiet; if (!*fmt) { pr_err("acpi_evalf() called with empty format\n"); return 0; } if (*fmt == 'q') { quiet = 1; fmt++; } else quiet = 0; res_type = *(fmt++); params.count = 0; params.pointer = &in_objs[0]; va_start(ap, fmt); while (*fmt) { char c = *(fmt++); switch (c) { case 'd': /* int */ in_objs[params.count].integer.value = va_arg(ap, int); in_objs[params.count++].type = ACPI_TYPE_INTEGER; break; /* add more types as needed */ default: pr_err("acpi_evalf() called with invalid format character '%c'\n", c); va_end(ap); return 0; } } va_end(ap); if (res_type != 'v') { result.length = sizeof(out_obj); result.pointer = &out_obj; resultp = &result; } else resultp = NULL; status = acpi_evaluate_object(handle, method, ¶ms, resultp); switch (res_type) { case 'd': /* int */ success = (status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER); if (success && res) *res = out_obj.integer.value; break; case 'v': /* void */ success = status == AE_OK; break; /* add more types as needed */ default: pr_err("acpi_evalf() called with invalid format character '%c'\n", res_type); return 0; } if (!success && !quiet) pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", method, fmt0, acpi_format_exception(status)); return success; } static int acpi_ec_read(int i, u8 *p) { int v; if (ecrd_handle) { if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) return 0; *p = v; } else { if (ec_read(i, p) < 0) return 0; } return 1; } static int acpi_ec_write(int i, u8 v) { if (ecwr_handle) { if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) return 0; } else { if (ec_write(i, v) < 0) return 0; } return 1; } static int issue_thinkpad_cmos_command(int cmos_cmd) { if (!cmos_handle) return -ENXIO; if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) return -EIO; return 0; } /************************************************************************* * ACPI device model */ #define TPACPI_ACPIHANDLE_INIT(object) \ drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ object##_paths, ARRAY_SIZE(object##_paths)) static void __init drv_acpi_handle_init(const char *name, acpi_handle *handle, const acpi_handle parent, char **paths, const int num_paths) { int i; acpi_status status; vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", name); for (i = 0; i < num_paths; i++) { status = acpi_get_handle(parent, paths[i], handle); if (ACPI_SUCCESS(status)) { dbg_printk(TPACPI_DBG_INIT, "Found ACPI handle %s for %s\n", paths[i], name); return; } } vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", name); *handle = NULL; } static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, u32 level, void *context, void **return_value) { struct acpi_device *dev; if (!strcmp(context, "video")) { if (acpi_bus_get_device(handle, &dev)) return AE_OK; if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) return AE_OK; } *(acpi_handle *)return_value = handle; return AE_CTRL_TERMINATE; } static void __init tpacpi_acpi_handle_locate(const char *name, const char *hid, acpi_handle *handle) { acpi_status status; acpi_handle device_found; BUG_ON(!name || !handle); vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s, using HID %s\n", name, hid ? hid : "NULL"); memset(&device_found, 0, sizeof(device_found)); status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, (void *)name, &device_found); *handle = NULL; if (ACPI_SUCCESS(status)) { *handle = device_found; dbg_printk(TPACPI_DBG_INIT, "Found ACPI handle for %s\n", name); } else { vdbg_printk(TPACPI_DBG_INIT, "Could not locate an ACPI handle for %s: %s\n", name, acpi_format_exception(status)); } } static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) { struct ibm_struct *ibm = data; if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) return; if (!ibm || !ibm->acpi || !ibm->acpi->notify) return; ibm->acpi->notify(ibm, event); } static int __init setup_acpi_notify(struct ibm_struct *ibm) { acpi_status status; int rc; BUG_ON(!ibm->acpi); if (!*ibm->acpi->handle) return 0; vdbg_printk(TPACPI_DBG_INIT, "setting up ACPI notify for %s\n", ibm->name); rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); if (rc < 0) { pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); return -ENODEV; } ibm->acpi->device->driver_data = ibm; sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name); status = acpi_install_notify_handler(*ibm->acpi->handle, ibm->acpi->type, dispatch_acpi_notify, ibm); if (ACPI_FAILURE(status)) { if (status == AE_ALREADY_EXISTS) { pr_notice("another device driver is already handling %s events\n", ibm->name); } else { pr_err("acpi_install_notify_handler(%s) failed: %s\n", ibm->name, acpi_format_exception(status)); } return -ENODEV; } ibm->flags.acpi_notify_installed = 1; return 0; } static int __init tpacpi_device_add(struct acpi_device *device) { return 0; } static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) { int rc; dbg_printk(TPACPI_DBG_INIT, "registering %s as an ACPI driver\n", ibm->name); BUG_ON(!ibm->acpi); ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); if (!ibm->acpi->driver) { pr_err("failed to allocate memory for ibm->acpi->driver\n"); return -ENOMEM; } sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); ibm->acpi->driver->ids = ibm->acpi->hid; ibm->acpi->driver->ops.add = &tpacpi_device_add; rc = acpi_bus_register_driver(ibm->acpi->driver); if (rc < 0) { pr_err("acpi_bus_register_driver(%s) failed: %d\n", ibm->name, rc); kfree(ibm->acpi->driver); ibm->acpi->driver = NULL; } else if (!rc) ibm->flags.acpi_driver_registered = 1; return rc; } /**************************************************************************** **************************************************************************** * * Procfs Helpers * **************************************************************************** ****************************************************************************/ static int dispatch_proc_show(struct seq_file *m, void *v) { struct ibm_struct *ibm = m->private; if (!ibm || !ibm->read) return -EINVAL; return ibm->read(m); } static int dispatch_proc_open(struct inode *inode, struct file *file) { return single_open(file, dispatch_proc_show, PDE_DATA(inode)); } static ssize_t dispatch_proc_write(struct file *file, const char __user *userbuf, size_t count, loff_t *pos) { struct ibm_struct *ibm = PDE_DATA(file_inode(file)); char *kernbuf; int ret; if (!ibm || !ibm->write) return -EINVAL; if (count > PAGE_SIZE - 2) return -EINVAL; kernbuf = kmalloc(count + 2, GFP_KERNEL); if (!kernbuf) return -ENOMEM; if (copy_from_user(kernbuf, userbuf, count)) { kfree(kernbuf); return -EFAULT; } kernbuf[count] = 0; strcat(kernbuf, ","); ret = ibm->write(kernbuf); if (ret == 0) ret = count; kfree(kernbuf); return ret; } static const struct proc_ops dispatch_proc_ops = { .proc_open = dispatch_proc_open, .proc_read = seq_read, .proc_lseek = seq_lseek, .proc_release = single_release, .proc_write = dispatch_proc_write, }; static char *next_cmd(char **cmds) { char *start = *cmds; char *end; while ((end = strchr(start, ',')) && end == start) start = end + 1; if (!end) return NULL; *end = 0; *cmds = end + 1; return start; } /**************************************************************************** **************************************************************************** * * Device model: input, hwmon and platform * **************************************************************************** ****************************************************************************/ static struct platform_device *tpacpi_pdev; static struct platform_device *tpacpi_sensors_pdev; static struct device *tpacpi_hwmon; static struct input_dev *tpacpi_inputdev; static struct mutex tpacpi_inputdev_send_mutex; static LIST_HEAD(tpacpi_all_drivers); #ifdef CONFIG_PM_SLEEP static int tpacpi_suspend_handler(struct device *dev) { struct ibm_struct *ibm, *itmp; list_for_each_entry_safe(ibm, itmp, &tpacpi_all_drivers, all_drivers) { if (ibm->suspend) (ibm->suspend)(); } return 0; } static int tpacpi_resume_handler(struct device *dev) { struct ibm_struct *ibm, *itmp; list_for_each_entry_safe(ibm, itmp, &tpacpi_all_drivers, all_drivers) { if (ibm->resume) (ibm->resume)(); } return 0; } #endif static SIMPLE_DEV_PM_OPS(tpacpi_pm, tpacpi_suspend_handler, tpacpi_resume_handler); static void tpacpi_shutdown_handler(struct platform_device *pdev) { struct ibm_struct *ibm, *itmp; list_for_each_entry_safe(ibm, itmp, &tpacpi_all_drivers, all_drivers) { if (ibm->shutdown) (ibm->shutdown)(); } } static struct platform_driver tpacpi_pdriver = { .driver = { .name = TPACPI_DRVR_NAME, .pm = &tpacpi_pm, }, .shutdown = tpacpi_shutdown_handler, }; static struct platform_driver tpacpi_hwmon_pdriver = { .driver = { .name = TPACPI_HWMON_DRVR_NAME, }, }; /************************************************************************* * sysfs support helpers */ struct attribute_set { unsigned int members, max_members; struct attribute_group group; }; struct attribute_set_obj { struct attribute_set s; struct attribute *a; } __attribute__((packed)); static struct attribute_set *create_attr_set(unsigned int max_members, const char *name) { struct attribute_set_obj *sobj; if (max_members == 0) return NULL; /* Allocates space for implicit NULL at the end too */ sobj = kzalloc(sizeof(struct attribute_set_obj) + max_members * sizeof(struct attribute *), GFP_KERNEL); if (!sobj) return NULL; sobj->s.max_members = max_members; sobj->s.group.attrs = &sobj->a; sobj->s.group.name = name; return &sobj->s; } #define destroy_attr_set(_set) \ kfree(_set); /* not multi-threaded safe, use it in a single thread per set */ static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) { if (!s || !attr) return -EINVAL; if (s->members >= s->max_members) return -ENOMEM; s->group.attrs[s->members] = attr; s->members++; return 0; } static int add_many_to_attr_set(struct attribute_set *s, struct attribute **attr, unsigned int count) { int i, res; for (i = 0; i < count; i++) { res = add_to_attr_set(s, attr[i]); if (res) return res; } return 0; } static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) { sysfs_remove_group(kobj, &s->group); destroy_attr_set(s); } #define register_attr_set_with_sysfs(_attr_set, _kobj) \ sysfs_create_group(_kobj, &_attr_set->group) static int parse_strtoul(const char *buf, unsigned long max, unsigned long *value) { char *endp; *value = simple_strtoul(skip_spaces(buf), &endp, 0); endp = skip_spaces(endp); if (*endp || *value > max) return -EINVAL; return 0; } static void tpacpi_disable_brightness_delay(void) { if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) pr_notice("ACPI backlight control delay disabled\n"); } static void printk_deprecated_attribute(const char * const what, const char * const details) { tpacpi_log_usertask("deprecated sysfs attribute"); pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", what, details); } /************************************************************************* * rfkill and radio control support helpers */ /* * ThinkPad-ACPI firmware handling model: * * WLSW (master wireless switch) is event-driven, and is common to all * firmware-controlled radios. It cannot be controlled, just monitored, * as expected. It overrides all radio state in firmware * * The kernel, a masked-off hotkey, and WLSW can change the radio state * (TODO: verify how WLSW interacts with the returned radio state). * * The only time there are shadow radio state changes, is when * masked-off hotkeys are used. */ /* * Internal driver API for radio state: * * int: < 0 = error, otherwise enum tpacpi_rfkill_state * bool: true means radio blocked (off) */ enum tpacpi_rfkill_state { TPACPI_RFK_RADIO_OFF = 0, TPACPI_RFK_RADIO_ON }; /* rfkill switches */ enum tpacpi_rfk_id { TPACPI_RFK_BLUETOOTH_SW_ID = 0, TPACPI_RFK_WWAN_SW_ID, TPACPI_RFK_UWB_SW_ID, TPACPI_RFK_SW_MAX }; static const char *tpacpi_rfkill_names[] = { [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", [TPACPI_RFK_WWAN_SW_ID] = "wwan", [TPACPI_RFK_UWB_SW_ID] = "uwb", [TPACPI_RFK_SW_MAX] = NULL }; /* ThinkPad-ACPI rfkill subdriver */ struct tpacpi_rfk { struct rfkill *rfkill; enum tpacpi_rfk_id id; const struct tpacpi_rfk_ops *ops; }; struct tpacpi_rfk_ops { /* firmware interface */ int (*get_status)(void); int (*set_status)(const enum tpacpi_rfkill_state); }; static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; /* Query FW and update rfkill sw state for a given rfkill switch */ static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) { int status; if (!tp_rfk) return -ENODEV; status = (tp_rfk->ops->get_status)(); if (status < 0) return status; rfkill_set_sw_state(tp_rfk->rfkill, (status == TPACPI_RFK_RADIO_OFF)); return status; } /* Query FW and update rfkill sw state for all rfkill switches */ static void tpacpi_rfk_update_swstate_all(void) { unsigned int i; for (i = 0; i < TPACPI_RFK_SW_MAX; i++) tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); } /* * Sync the HW-blocking state of all rfkill switches, * do notice it causes the rfkill core to schedule uevents */ static void tpacpi_rfk_update_hwblock_state(bool blocked) { unsigned int i; struct tpacpi_rfk *tp_rfk; for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { tp_rfk = tpacpi_rfkill_switches[i]; if (tp_rfk) { if (rfkill_set_hw_state(tp_rfk->rfkill, blocked)) { /* ignore -- we track sw block */ } } } } /* Call to get the WLSW state from the firmware */ static int hotkey_get_wlsw(void); /* Call to query WLSW state and update all rfkill switches */ static bool tpacpi_rfk_check_hwblock_state(void) { int res = hotkey_get_wlsw(); int hw_blocked; /* When unknown or unsupported, we have to assume it is unblocked */ if (res < 0) return false; hw_blocked = (res == TPACPI_RFK_RADIO_OFF); tpacpi_rfk_update_hwblock_state(hw_blocked); return hw_blocked; } static int tpacpi_rfk_hook_set_block(void *data, bool blocked) { struct tpacpi_rfk *tp_rfk = data; int res; dbg_printk(TPACPI_DBG_RFKILL, "request to change radio state to %s\n", blocked ? "blocked" : "unblocked"); /* try to set radio state */ res = (tp_rfk->ops->set_status)(blocked ? TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); /* and update the rfkill core with whatever the FW really did */ tpacpi_rfk_update_swstate(tp_rfk); return (res < 0) ? res : 0; } static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { .set_block = tpacpi_rfk_hook_set_block, }; static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, const struct tpacpi_rfk_ops *tp_rfkops, const enum rfkill_type rfktype, const char *name, const bool set_default) { struct tpacpi_rfk *atp_rfk; int res; bool sw_state = false; bool hw_state; int sw_status; BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); if (atp_rfk) atp_rfk->rfkill = rfkill_alloc(name, &tpacpi_pdev->dev, rfktype, &tpacpi_rfk_rfkill_ops, atp_rfk); if (!atp_rfk || !atp_rfk->rfkill) { pr_err("failed to allocate memory for rfkill class\n"); kfree(atp_rfk); return -ENOMEM; } atp_rfk->id = id; atp_rfk->ops = tp_rfkops; sw_status = (tp_rfkops->get_status)(); if (sw_status < 0) { pr_err("failed to read initial state for %s, error %d\n", name, sw_status); } else { sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); if (set_default) { /* try to keep the initial state, since we ask the * firmware to preserve it across S5 in NVRAM */ rfkill_init_sw_state(atp_rfk->rfkill, sw_state); } } hw_state = tpacpi_rfk_check_hwblock_state(); rfkill_set_hw_state(atp_rfk->rfkill, hw_state); res = rfkill_register(atp_rfk->rfkill); if (res < 0) { pr_err("failed to register %s rfkill switch: %d\n", name, res); rfkill_destroy(atp_rfk->rfkill); kfree(atp_rfk); return res; } tpacpi_rfkill_switches[id] = atp_rfk; pr_info("rfkill switch %s: radio is %sblocked\n", name, (sw_state || hw_state) ? "" : "un"); return 0; } static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) { struct tpacpi_rfk *tp_rfk; BUG_ON(id >= TPACPI_RFK_SW_MAX); tp_rfk = tpacpi_rfkill_switches[id]; if (tp_rfk) { rfkill_unregister(tp_rfk->rfkill); rfkill_destroy(tp_rfk->rfkill); tpacpi_rfkill_switches[id] = NULL; kfree(tp_rfk); } } static void printk_deprecated_rfkill_attribute(const char * const what) { printk_deprecated_attribute(what, "Please switch to generic rfkill before year 2010"); } /* sysfs <radio> enable ------------------------------------------------ */ static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, struct device_attribute *attr, char *buf) { int status; printk_deprecated_rfkill_attribute(attr->attr.name); /* This is in the ABI... */ if (tpacpi_rfk_check_hwblock_state()) { status = TPACPI_RFK_RADIO_OFF; } else { status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); if (status < 0) return status; } return snprintf(buf, PAGE_SIZE, "%d\n", (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); } static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res; printk_deprecated_rfkill_attribute(attr->attr.name); if (parse_strtoul(buf, 1, &t)) return -EINVAL; tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); /* This is in the ABI... */ if (tpacpi_rfk_check_hwblock_state() && !!t) return -EPERM; res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); return (res < 0) ? res : count; } /* procfs -------------------------------------------------------------- */ static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) { if (id >= TPACPI_RFK_SW_MAX) seq_printf(m, "status:\t\tnot supported\n"); else { int status; /* This is in the ABI... */ if (tpacpi_rfk_check_hwblock_state()) { status = TPACPI_RFK_RADIO_OFF; } else { status = tpacpi_rfk_update_swstate( tpacpi_rfkill_switches[id]); if (status < 0) return status; } seq_printf(m, "status:\t\t%s\n", (status == TPACPI_RFK_RADIO_ON) ? "enabled" : "disabled"); seq_printf(m, "commands:\tenable, disable\n"); } return 0; } static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) { char *cmd; int status = -1; int res = 0; if (id >= TPACPI_RFK_SW_MAX) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "enable") == 0) status = TPACPI_RFK_RADIO_ON; else if (strlencmp(cmd, "disable") == 0) status = TPACPI_RFK_RADIO_OFF; else return -EINVAL; } if (status != -1) { tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", (status == TPACPI_RFK_RADIO_ON) ? "enable" : "disable", tpacpi_rfkill_names[id]); res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); } return res; } /************************************************************************* * thinkpad-acpi driver attributes */ /* interface_version --------------------------------------------------- */ static ssize_t interface_version_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); } static DRIVER_ATTR_RO(interface_version); /* debug_level --------------------------------------------------------- */ static ssize_t debug_level_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); } static ssize_t debug_level_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 0xffff, &t)) return -EINVAL; dbg_level = t; return count; } static DRIVER_ATTR_RW(debug_level); /* version ------------------------------------------------------------- */ static ssize_t version_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); } static DRIVER_ATTR_RO(version); /* --------------------------------------------------------------------- */ #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES /* wlsw_emulstate ------------------------------------------------------ */ static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); } static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 1, &t)) return -EINVAL; if (tpacpi_wlsw_emulstate != !!t) { tpacpi_wlsw_emulstate = !!t; tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ } return count; } static DRIVER_ATTR_RW(wlsw_emulstate); /* bluetooth_emulstate ------------------------------------------------- */ static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); } static ssize_t bluetooth_emulstate_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 1, &t)) return -EINVAL; tpacpi_bluetooth_emulstate = !!t; return count; } static DRIVER_ATTR_RW(bluetooth_emulstate); /* wwan_emulstate ------------------------------------------------- */ static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); } static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 1, &t)) return -EINVAL; tpacpi_wwan_emulstate = !!t; return count; } static DRIVER_ATTR_RW(wwan_emulstate); /* uwb_emulstate ------------------------------------------------- */ static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); } static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 1, &t)) return -EINVAL; tpacpi_uwb_emulstate = !!t; return count; } static DRIVER_ATTR_RW(uwb_emulstate); #endif /* --------------------------------------------------------------------- */ static struct driver_attribute *tpacpi_driver_attributes[] = { &driver_attr_debug_level, &driver_attr_version, &driver_attr_interface_version, }; static int __init tpacpi_create_driver_attributes(struct device_driver *drv) { int i, res; i = 0; res = 0; while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { res = driver_create_file(drv, tpacpi_driver_attributes[i]); i++; } #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (!res && dbg_wlswemul) res = driver_create_file(drv, &driver_attr_wlsw_emulstate); if (!res && dbg_bluetoothemul) res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); if (!res && dbg_wwanemul) res = driver_create_file(drv, &driver_attr_wwan_emulstate); if (!res && dbg_uwbemul) res = driver_create_file(drv, &driver_attr_uwb_emulstate); #endif return res; } static void tpacpi_remove_driver_attributes(struct device_driver *drv) { int i; for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) driver_remove_file(drv, tpacpi_driver_attributes[i]); #ifdef THINKPAD_ACPI_DEBUGFACILITIES driver_remove_file(drv, &driver_attr_wlsw_emulstate); driver_remove_file(drv, &driver_attr_bluetooth_emulstate); driver_remove_file(drv, &driver_attr_wwan_emulstate); driver_remove_file(drv, &driver_attr_uwb_emulstate); #endif } /************************************************************************* * Firmware Data */ /* * Table of recommended minimum BIOS versions * * Reasons for listing: * 1. Stable BIOS, listed because the unknown amount of * bugs and bad ACPI behaviour on older versions * * 2. BIOS or EC fw with known bugs that trigger on Linux * * 3. BIOS with known reduced functionality in older versions * * We recommend the latest BIOS and EC version. * We only support the latest BIOS and EC fw version as a rule. * * Sources: IBM ThinkPad Public Web Documents (update changelogs), * Information from users in ThinkWiki * * WARNING: we use this table also to detect that the machine is * a ThinkPad in some cases, so don't remove entries lightly. */ #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ { .vendor = (__v), \ .bios = TPID(__id1, __id2), \ .ec = TPACPI_MATCH_ANY, \ .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ | TPVER(__bv1, __bv2) } #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ __eid, __ev1, __ev2) \ { .vendor = (__v), \ .bios = TPID(__bid1, __bid2), \ .ec = __eid, \ .quirks = TPVER(__ev1, __ev2) << 16 \ | TPVER(__bv1, __bv2) } #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) /* Outdated IBM BIOSes often lack the EC id string */ #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ __bv1, __bv2, TPID(__id1, __id2), \ __ev1, __ev2), \ TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ __ev1, __ev2) /* Outdated IBM BIOSes often lack the EC id string */ #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ __eid1, __eid2, __ev1, __ev2) \ TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ __bv1, __bv2, TPID(__eid1, __eid2), \ __ev1, __ev2), \ TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ __ev1, __ev2) #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ __bv1, __bv2, TPID(__id1, __id2), \ __ev1, __ev2) #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ __eid1, __eid2, __ev1, __ev2) \ TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ __bv1, __bv2, TPID(__eid1, __eid2), \ __ev1, __ev2) static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { /* Numeric models ------------------ */ /* FW MODEL BIOS VERS */ TPV_QI0('I', 'M', '6', '5'), /* 570 */ TPV_QI0('I', 'U', '2', '6'), /* 570E */ TPV_QI0('I', 'B', '5', '4'), /* 600 */ TPV_QI0('I', 'H', '4', '7'), /* 600E */ TPV_QI0('I', 'N', '3', '6'), /* 600E */ TPV_QI0('I', 'T', '5', '5'), /* 600X */ TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ TPV_QI0('I', 'I', '4', '2'), /* 770X */ TPV_QI0('I', 'O', '2', '3'), /* 770Z */ /* A-series ------------------------- */ /* FW MODEL BIOS VERS EC VERS */ TPV_QI0('I', 'W', '5', '9'), /* A20m */ TPV_QI0('I', 'V', '6', '9'), /* A20p */ TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ TPV_QI0('K', 'U', '3', '6'), /* A21e */ TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ TPV_QI0('1', 'B', '1', '7'), /* A22e */ TPV_QI0('1', '3', '2', '0'), /* A22m */ TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ /* G-series ------------------------- */ /* FW MODEL BIOS VERS */ TPV_QI0('1', 'T', 'A', '6'), /* G40 */ TPV_QI0('1', 'X', '5', '7'), /* G41 */ /* R-series, T-series --------------- */ /* FW MODEL BIOS VERS EC VERS */ TPV_QI0('1', 'C', 'F', '0'), /* R30 */ TPV_QI0('1', 'F', 'F', '1'), /* R31 */ TPV_QI0('1', 'M', '9', '7'), /* R32 */ TPV_QI0('1', 'O', '6', '1'), /* R40 */ TPV_QI0('1', 'P', '6', '5'), /* R40 */ TPV_QI0('1', 'S', '7', '0'), /* R40e */ TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, T40/p, T41/p, T42/p (1) */ TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ TPV_QI0('I', 'Y', '6', '1'), /* T20 */ TPV_QI0('K', 'Z', '3', '4'), /* T21 */ TPV_QI0('1', '6', '3', '2'), /* T22 */ TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ /* BIOS FW BIOS VERS EC FW EC VERS */ TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ /* X-series ------------------------- */ /* FW MODEL BIOS VERS EC VERS */ TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ /* (0) - older versions lack DMI EC fw string and functionality */ /* (1) - older versions known to lack functionality */ }; #undef TPV_QL1 #undef TPV_QL0 #undef TPV_QI2 #undef TPV_QI1 #undef TPV_QI0 #undef TPV_Q_X #undef TPV_Q static void __init tpacpi_check_outdated_fw(void) { unsigned long fwvers; u16 ec_version, bios_version; fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, ARRAY_SIZE(tpacpi_bios_version_qtable)); if (!fwvers) return; bios_version = fwvers & 0xffffU; ec_version = (fwvers >> 16) & 0xffffU; /* note that unknown versions are set to 0x0000 and we use that */ if ((bios_version > thinkpad_id.bios_release) || (ec_version > thinkpad_id.ec_release && ec_version != TPACPI_MATCH_ANY_VERSION)) { /* * The changelogs would let us track down the exact * reason, but it is just too much of a pain to track * it. We only list BIOSes that are either really * broken, or really stable to begin with, so it is * best if the user upgrades the firmware anyway. */ pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); } } static bool __init tpacpi_is_fw_known(void) { return tpacpi_check_quirks(tpacpi_bios_version_qtable, ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; } /**************************************************************************** **************************************************************************** * * Subdrivers * **************************************************************************** ****************************************************************************/ /************************************************************************* * thinkpad-acpi metadata subdriver */ static int thinkpad_acpi_driver_read(struct seq_file *m) { seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); seq_printf(m, "version:\t%s\n", TPACPI_VERSION); return 0; } static struct ibm_struct thinkpad_acpi_driver_data = { .name = "driver", .read = thinkpad_acpi_driver_read, }; /************************************************************************* * Hotkey subdriver */ /* * ThinkPad firmware event model * * The ThinkPad firmware has two main event interfaces: normal ACPI * notifications (which follow the ACPI standard), and a private event * interface. * * The private event interface also issues events for the hotkeys. As * the driver gained features, the event handling code ended up being * built around the hotkey subdriver. This will need to be refactored * to a more formal event API eventually. * * Some "hotkeys" are actually supposed to be used as event reports, * such as "brightness has changed", "volume has changed", depending on * the ThinkPad model and how the firmware is operating. * * Unlike other classes, hotkey-class events have mask/unmask control on * non-ancient firmware. However, how it behaves changes a lot with the * firmware model and version. */ enum { /* hot key scan codes (derived from ACPI DSDT) */ TP_ACPI_HOTKEYSCAN_FNF1 = 0, TP_ACPI_HOTKEYSCAN_FNF2, TP_ACPI_HOTKEYSCAN_FNF3, TP_ACPI_HOTKEYSCAN_FNF4, TP_ACPI_HOTKEYSCAN_FNF5, TP_ACPI_HOTKEYSCAN_FNF6, TP_ACPI_HOTKEYSCAN_FNF7, TP_ACPI_HOTKEYSCAN_FNF8, TP_ACPI_HOTKEYSCAN_FNF9, TP_ACPI_HOTKEYSCAN_FNF10, TP_ACPI_HOTKEYSCAN_FNF11, TP_ACPI_HOTKEYSCAN_FNF12, TP_ACPI_HOTKEYSCAN_FNBACKSPACE, TP_ACPI_HOTKEYSCAN_FNINSERT, TP_ACPI_HOTKEYSCAN_FNDELETE, TP_ACPI_HOTKEYSCAN_FNHOME, TP_ACPI_HOTKEYSCAN_FNEND, TP_ACPI_HOTKEYSCAN_FNPAGEUP, TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, TP_ACPI_HOTKEYSCAN_FNSPACE, TP_ACPI_HOTKEYSCAN_VOLUMEUP, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, TP_ACPI_HOTKEYSCAN_MUTE, TP_ACPI_HOTKEYSCAN_THINKPAD, TP_ACPI_HOTKEYSCAN_UNK1, TP_ACPI_HOTKEYSCAN_UNK2, TP_ACPI_HOTKEYSCAN_UNK3, TP_ACPI_HOTKEYSCAN_UNK4, TP_ACPI_HOTKEYSCAN_UNK5, TP_ACPI_HOTKEYSCAN_UNK6, TP_ACPI_HOTKEYSCAN_UNK7, TP_ACPI_HOTKEYSCAN_UNK8, /* Adaptive keyboard keycodes */ TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, TP_ACPI_HOTKEYSCAN_CLOUD, TP_ACPI_HOTKEYSCAN_UNK9, TP_ACPI_HOTKEYSCAN_VOICE, TP_ACPI_HOTKEYSCAN_UNK10, TP_ACPI_HOTKEYSCAN_GESTURES, TP_ACPI_HOTKEYSCAN_UNK11, TP_ACPI_HOTKEYSCAN_UNK12, TP_ACPI_HOTKEYSCAN_UNK13, TP_ACPI_HOTKEYSCAN_CONFIG, TP_ACPI_HOTKEYSCAN_NEW_TAB, TP_ACPI_HOTKEYSCAN_RELOAD, TP_ACPI_HOTKEYSCAN_BACK, TP_ACPI_HOTKEYSCAN_MIC_DOWN, TP_ACPI_HOTKEYSCAN_MIC_UP, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, /* Lenovo extended keymap, starting at 0x1300 */ TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* first new observed key (star, favorites) is 0x1311 */ TP_ACPI_HOTKEYSCAN_STAR = 69, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, TP_ACPI_HOTKEYSCAN_CALCULATOR, TP_ACPI_HOTKEYSCAN_BLUETOOTH, TP_ACPI_HOTKEYSCAN_KEYBOARD, /* Hotkey keymap size */ TPACPI_HOTKEY_MAP_LEN }; enum { /* Keys/events available through NVRAM polling */ TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, }; enum { /* Positions of some of the keys in hotkey masks */ TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, }; enum { /* NVRAM to ACPI HKEY group map */ TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | TP_ACPI_HKEY_ZOOM_MASK | TP_ACPI_HKEY_DISPSWTCH_MASK | TP_ACPI_HKEY_HIBERNATE_MASK, TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | TP_ACPI_HKEY_BRGHTDWN_MASK, TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | TP_ACPI_HKEY_VOLDWN_MASK | TP_ACPI_HKEY_MUTE_MASK, }; #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL struct tp_nvram_state { u16 thinkpad_toggle:1; u16 zoom_toggle:1; u16 display_toggle:1; u16 thinklight_toggle:1; u16 hibernate_toggle:1; u16 displayexp_toggle:1; u16 display_state:1; u16 brightness_toggle:1; u16 volume_toggle:1; u16 mute:1; u8 brightness_level; u8 volume_level; }; /* kthread for the hotkey poller */ static struct task_struct *tpacpi_hotkey_task; /* * Acquire mutex to write poller control variables as an * atomic block. * * Increment hotkey_config_change when changing them if you * want the kthread to forget old state. * * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END */ static struct mutex hotkey_thread_data_mutex; static unsigned int hotkey_config_change; /* * hotkey poller control variables * * Must be atomic or readers will also need to acquire mutex * * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END * should be used only when the changes need to be taken as * a block, OR when one needs to force the kthread to forget * old state. */ static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ static unsigned int hotkey_poll_freq = 10; /* Hz */ #define HOTKEY_CONFIG_CRITICAL_START \ do { \ mutex_lock(&hotkey_thread_data_mutex); \ hotkey_config_change++; \ } while (0); #define HOTKEY_CONFIG_CRITICAL_END \ mutex_unlock(&hotkey_thread_data_mutex); #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ #define hotkey_source_mask 0U #define HOTKEY_CONFIG_CRITICAL_START #define HOTKEY_CONFIG_CRITICAL_END #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ static struct mutex hotkey_mutex; static enum { /* Reasons for waking up */ TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ } hotkey_wakeup_reason; static int hotkey_autosleep_ack; static u32 hotkey_orig_mask; /* events the BIOS had enabled */ static u32 hotkey_all_mask; /* all events supported in fw */ static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ static u32 hotkey_reserved_mask; /* events better left disabled */ static u32 hotkey_driver_mask; /* events needed by the driver */ static u32 hotkey_user_mask; /* events visible to userspace */ static u32 hotkey_acpi_mask; /* events enabled in firmware */ static u16 *hotkey_keycode_map; static struct attribute_set *hotkey_dev_attributes; static void tpacpi_driver_event(const unsigned int hkey_event); static void hotkey_driver_event(const unsigned int scancode); static void hotkey_poll_setup(const bool may_warn); /* HKEY.MHKG() return bits */ #define TP_HOTKEY_TABLET_MASK (1 << 3) enum { TP_ACPI_MULTI_MODE_INVALID = 0, TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, TP_ACPI_MULTI_MODE_TABLET = 1 << 2, TP_ACPI_MULTI_MODE_FLAT = 1 << 3, TP_ACPI_MULTI_MODE_STAND = 1 << 4, TP_ACPI_MULTI_MODE_TENT = 1 << 5, TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, }; enum { /* The following modes are considered tablet mode for the purpose of * reporting the status to userspace. i.e. in all these modes it makes * sense to disable the laptop input devices such as touchpad and * keyboard. */ TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | TP_ACPI_MULTI_MODE_STAND | TP_ACPI_MULTI_MODE_TENT | TP_ACPI_MULTI_MODE_STAND_TENT, }; static int hotkey_get_wlsw(void) { int status; if (!tp_features.hotkey_wlsw) return -ENODEV; #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_wlswemul) return (tpacpi_wlsw_emulstate) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) return -EIO; return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) { int type = (s >> 16) & 0xffff; int value = s & 0xffff; int mode = TP_ACPI_MULTI_MODE_INVALID; int valid_modes = 0; if (has_tablet_mode) *has_tablet_mode = 0; switch (type) { case 1: valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | TP_ACPI_MULTI_MODE_TABLET | TP_ACPI_MULTI_MODE_STAND_TENT; break; case 2: valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | TP_ACPI_MULTI_MODE_FLAT | TP_ACPI_MULTI_MODE_TABLET | TP_ACPI_MULTI_MODE_STAND | TP_ACPI_MULTI_MODE_TENT; break; case 3: valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | TP_ACPI_MULTI_MODE_FLAT; break; case 4: case 5: /* In mode 4, FLAT is not specified as a valid mode. However, * it can be seen at least on the X1 Yoga 2nd Generation. */ valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | TP_ACPI_MULTI_MODE_FLAT | TP_ACPI_MULTI_MODE_TABLET | TP_ACPI_MULTI_MODE_STAND | TP_ACPI_MULTI_MODE_TENT; break; default: pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", type, value, TPACPI_MAIL); return 0; } if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) *has_tablet_mode = 1; switch (value) { case 1: mode = TP_ACPI_MULTI_MODE_LAPTOP; break; case 2: mode = TP_ACPI_MULTI_MODE_FLAT; break; case 3: mode = TP_ACPI_MULTI_MODE_TABLET; break; case 4: if (type == 1) mode = TP_ACPI_MULTI_MODE_STAND_TENT; else mode = TP_ACPI_MULTI_MODE_STAND; break; case 5: mode = TP_ACPI_MULTI_MODE_TENT; break; default: if (type == 5 && value == 0xffff) { pr_warn("Multi mode status is undetected, assuming laptop\n"); return 0; } } if (!(mode & valid_modes)) { pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", value, type, TPACPI_MAIL); return 0; } return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); } static int hotkey_get_tablet_mode(int *status) { int s; switch (tp_features.hotkey_tablet) { case TP_HOTKEY_TABLET_USES_MHKG: if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) return -EIO; *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); break; case TP_HOTKEY_TABLET_USES_GMMS: if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) return -EIO; *status = hotkey_gmms_get_tablet_mode(s, NULL); break; default: break; } return 0; } /* * Reads current event mask from firmware, and updates * hotkey_acpi_mask accordingly. Also resets any bits * from hotkey_user_mask that are unavailable to be * delivered (shadow requirement of the userspace ABI). * * Call with hotkey_mutex held */ static int hotkey_mask_get(void) { if (tp_features.hotkey_mask) { u32 m = 0; if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) return -EIO; hotkey_acpi_mask = m; } else { /* no mask support doesn't mean no event support... */ hotkey_acpi_mask = hotkey_all_mask; } /* sync userspace-visible mask */ hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); return 0; } static void hotkey_mask_warn_incomplete_mask(void) { /* log only what the user can fix... */ const u32 wantedmask = hotkey_driver_mask & ~(hotkey_acpi_mask | hotkey_source_mask) & (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); if (wantedmask) pr_notice("required events 0x%08x not enabled!\n", wantedmask); } /* * Set the firmware mask when supported * * Also calls hotkey_mask_get to update hotkey_acpi_mask. * * NOTE: does not set bits in hotkey_user_mask, but may reset them. * * Call with hotkey_mutex held */ static int hotkey_mask_set(u32 mask) { int i; int rc = 0; const u32 fwmask = mask & ~hotkey_source_mask; if (tp_features.hotkey_mask) { for (i = 0; i < 32; i++) { if (!acpi_evalf(hkey_handle, NULL, "MHKM", "vdd", i + 1, !!(mask & (1 << i)))) { rc = -EIO; break; } } } /* * We *must* make an inconditional call to hotkey_mask_get to * refresh hotkey_acpi_mask and update hotkey_user_mask * * Take the opportunity to also log when we cannot _enable_ * a given event. */ if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", fwmask, hotkey_acpi_mask); } if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) hotkey_mask_warn_incomplete_mask(); return rc; } /* * Sets hotkey_user_mask and tries to set the firmware mask * * Call with hotkey_mutex held */ static int hotkey_user_mask_set(const u32 mask) { int rc; /* Give people a chance to notice they are doing something that * is bound to go boom on their users sooner or later */ if (!tp_warned.hotkey_mask_ff && (mask == 0xffff || mask == 0xffffff || mask == 0xffffffff)) { tp_warned.hotkey_mask_ff = 1; pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", mask); pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); } /* Try to enable what the user asked for, plus whatever we need. * this syncs everything but won't enable bits in hotkey_user_mask */ rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); /* Enable the available bits in hotkey_user_mask */ hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); return rc; } /* * Sets the driver hotkey mask. * * Can be called even if the hotkey subdriver is inactive */ static int tpacpi_hotkey_driver_mask_set(const u32 mask) { int rc; /* Do the right thing if hotkey_init has not been called yet */ if (!tp_features.hotkey) { hotkey_driver_mask = mask; return 0; } mutex_lock(&hotkey_mutex); HOTKEY_CONFIG_CRITICAL_START hotkey_driver_mask = mask; #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL hotkey_source_mask |= (mask & ~hotkey_all_mask); #endif HOTKEY_CONFIG_CRITICAL_END rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & ~hotkey_source_mask); hotkey_poll_setup(true); mutex_unlock(&hotkey_mutex); return rc; } static int hotkey_status_get(int *status) { if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) return -EIO; return 0; } static int hotkey_status_set(bool enable) { if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) return -EIO; return 0; } static void tpacpi_input_send_tabletsw(void) { int state; if (tp_features.hotkey_tablet && !hotkey_get_tablet_mode(&state)) { mutex_lock(&tpacpi_inputdev_send_mutex); input_report_switch(tpacpi_inputdev, SW_TABLET_MODE, !!state); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } } /* Do NOT call without validating scancode first */ static void tpacpi_input_send_key(const unsigned int scancode) { const unsigned int keycode = hotkey_keycode_map[scancode]; if (keycode != KEY_RESERVED) { mutex_lock(&tpacpi_inputdev_send_mutex); input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); input_report_key(tpacpi_inputdev, keycode, 1); input_sync(tpacpi_inputdev); input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); input_report_key(tpacpi_inputdev, keycode, 0); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } } /* Do NOT call without validating scancode first */ static void tpacpi_input_send_key_masked(const unsigned int scancode) { hotkey_driver_event(scancode); if (hotkey_user_mask & (1 << scancode)) tpacpi_input_send_key(scancode); } #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; /* Do NOT call without validating scancode first */ static void tpacpi_hotkey_send_key(unsigned int scancode) { tpacpi_input_send_key_masked(scancode); } static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) { u8 d; if (m & TP_NVRAM_HKEY_GROUP_HK2) { d = nvram_read_byte(TP_NVRAM_ADDR_HK2); n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); } if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); } if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); n->displayexp_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); } if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; n->brightness_toggle = !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); } if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) >> TP_NVRAM_POS_LEVEL_VOLUME; n->mute = !!(d & TP_NVRAM_MASK_MUTE); n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); } } #define TPACPI_COMPARE_KEY(__scancode, __member) \ do { \ if ((event_mask & (1 << __scancode)) && \ oldn->__member != newn->__member) \ tpacpi_hotkey_send_key(__scancode); \ } while (0) #define TPACPI_MAY_SEND_KEY(__scancode) \ do { \ if (event_mask & (1 << __scancode)) \ tpacpi_hotkey_send_key(__scancode); \ } while (0) static void issue_volchange(const unsigned int oldvol, const unsigned int newvol, const u32 event_mask) { unsigned int i = oldvol; while (i > newvol) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); i--; } while (i < newvol) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); i++; } } static void issue_brightnesschange(const unsigned int oldbrt, const unsigned int newbrt, const u32 event_mask) { unsigned int i = oldbrt; while (i > newbrt) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); i--; } while (i < newbrt) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); i++; } } static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, struct tp_nvram_state *newn, const u32 event_mask) { TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); /* * Handle volume * * This code is supposed to duplicate the IBM firmware behaviour: * - Pressing MUTE issues mute hotkey message, even when already mute * - Pressing Volume up/down issues volume up/down hotkey messages, * even when already at maximum or minimum volume * - The act of unmuting issues volume up/down notification, * depending which key was used to unmute * * We are constrained to what the NVRAM can tell us, which is not much * and certainly not enough if more than one volume hotkey was pressed * since the last poll cycle. * * Just to make our life interesting, some newer Lenovo ThinkPads have * bugs in the BIOS and may fail to update volume_toggle properly. */ if (newn->mute) { /* muted */ if (!oldn->mute || oldn->volume_toggle != newn->volume_toggle || oldn->volume_level != newn->volume_level) { /* recently muted, or repeated mute keypress, or * multiple presses ending in mute */ issue_volchange(oldn->volume_level, newn->volume_level, event_mask); TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); } } else { /* unmute */ if (oldn->mute) { /* recently unmuted, issue 'unmute' keypress */ TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); } if (oldn->volume_level != newn->volume_level) { issue_volchange(oldn->volume_level, newn->volume_level, event_mask); } else if (oldn->volume_toggle != newn->volume_toggle) { /* repeated vol up/down keypress at end of scale ? */ if (newn->volume_level == 0) TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); } } /* handle brightness */ if (oldn->brightness_level != newn->brightness_level) { issue_brightnesschange(oldn->brightness_level, newn->brightness_level, event_mask); } else if (oldn->brightness_toggle != newn->brightness_toggle) { /* repeated key presses that didn't change state */ if (newn->brightness_level == 0) TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); else if (newn->brightness_level >= bright_maxlvl && !tp_features.bright_unkfw) TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); } #undef TPACPI_COMPARE_KEY #undef TPACPI_MAY_SEND_KEY } /* * Polling driver * * We track all events in hotkey_source_mask all the time, since * most of them are edge-based. We only issue those requested by * hotkey_user_mask or hotkey_driver_mask, though. */ static int hotkey_kthread(void *data) { struct tp_nvram_state s[2]; u32 poll_mask, event_mask; unsigned int si, so; unsigned long t; unsigned int change_detector; unsigned int poll_freq; bool was_frozen; if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) goto exit; set_freezable(); so = 0; si = 1; t = 0; /* Initial state for compares */ mutex_lock(&hotkey_thread_data_mutex); change_detector = hotkey_config_change; poll_mask = hotkey_source_mask; event_mask = hotkey_source_mask & (hotkey_driver_mask | hotkey_user_mask); poll_freq = hotkey_poll_freq; mutex_unlock(&hotkey_thread_data_mutex); hotkey_read_nvram(&s[so], poll_mask); while (!kthread_should_stop()) { if (t == 0) { if (likely(poll_freq)) t = 1000/poll_freq; else t = 100; /* should never happen... */ } t = msleep_interruptible(t); if (unlikely(kthread_freezable_should_stop(&was_frozen))) break; if (t > 0 && !was_frozen) continue; mutex_lock(&hotkey_thread_data_mutex); if (was_frozen || hotkey_config_change != change_detector) { /* forget old state on thaw or config change */ si = so; t = 0; change_detector = hotkey_config_change; } poll_mask = hotkey_source_mask; event_mask = hotkey_source_mask & (hotkey_driver_mask | hotkey_user_mask); poll_freq = hotkey_poll_freq; mutex_unlock(&hotkey_thread_data_mutex); if (likely(poll_mask)) { hotkey_read_nvram(&s[si], poll_mask); if (likely(si != so)) { hotkey_compare_and_issue_event(&s[so], &s[si], event_mask); } } so = si; si ^= 1; } exit: return 0; } /* call with hotkey_mutex held */ static void hotkey_poll_stop_sync(void) { if (tpacpi_hotkey_task) { kthread_stop(tpacpi_hotkey_task); tpacpi_hotkey_task = NULL; } } /* call with hotkey_mutex held */ static void hotkey_poll_setup(const bool may_warn) { const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; if (hotkey_poll_freq > 0 && (poll_driver_mask || (poll_user_mask && tpacpi_inputdev->users > 0))) { if (!tpacpi_hotkey_task) { tpacpi_hotkey_task = kthread_run(hotkey_kthread, NULL, TPACPI_NVRAM_KTHREAD_NAME); if (IS_ERR(tpacpi_hotkey_task)) { tpacpi_hotkey_task = NULL; pr_err("could not create kernel thread for hotkey polling\n"); } } } else { hotkey_poll_stop_sync(); if (may_warn && (poll_driver_mask || poll_user_mask) && hotkey_poll_freq == 0) { pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", poll_user_mask, poll_driver_mask); } } } static void hotkey_poll_setup_safe(const bool may_warn) { mutex_lock(&hotkey_mutex); hotkey_poll_setup(may_warn); mutex_unlock(&hotkey_mutex); } /* call with hotkey_mutex held */ static void hotkey_poll_set_freq(unsigned int freq) { if (!freq) hotkey_poll_stop_sync(); hotkey_poll_freq = freq; } #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ static void hotkey_poll_setup(const bool __unused) { } static void hotkey_poll_setup_safe(const bool __unused) { } #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ static int hotkey_inputdev_open(struct input_dev *dev) { switch (tpacpi_lifecycle) { case TPACPI_LIFE_INIT: case TPACPI_LIFE_RUNNING: hotkey_poll_setup_safe(false); return 0; case TPACPI_LIFE_EXITING: return -EBUSY; } /* Should only happen if tpacpi_lifecycle is corrupt */ BUG(); return -EBUSY; } static void hotkey_inputdev_close(struct input_dev *dev) { /* disable hotkey polling when possible */ if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && !(hotkey_source_mask & hotkey_driver_mask)) hotkey_poll_setup_safe(false); } /* sysfs hotkey enable ------------------------------------------------- */ static ssize_t hotkey_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, status; printk_deprecated_attribute("hotkey_enable", "Hotkey reporting is always enabled"); res = hotkey_status_get(&status); if (res) return res; return snprintf(buf, PAGE_SIZE, "%d\n", status); } static ssize_t hotkey_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; printk_deprecated_attribute("hotkey_enable", "Hotkeys can be disabled through hotkey_mask"); if (parse_strtoul(buf, 1, &t)) return -EINVAL; if (t == 0) return -EPERM; return count; } static DEVICE_ATTR_RW(hotkey_enable); /* sysfs hotkey mask --------------------------------------------------- */ static ssize_t hotkey_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); } static ssize_t hotkey_mask_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res; if (parse_strtoul(buf, 0xffffffffUL, &t)) return -EINVAL; if (mutex_lock_killable(&hotkey_mutex)) return -ERESTARTSYS; res = hotkey_user_mask_set(t); #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL hotkey_poll_setup(true); #endif mutex_unlock(&hotkey_mutex); tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); return (res) ? res : count; } static DEVICE_ATTR_RW(hotkey_mask); /* sysfs hotkey bios_enabled ------------------------------------------- */ static ssize_t hotkey_bios_enabled_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "0\n"); } static DEVICE_ATTR_RO(hotkey_bios_enabled); /* sysfs hotkey bios_mask ---------------------------------------------- */ static ssize_t hotkey_bios_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { printk_deprecated_attribute("hotkey_bios_mask", "This attribute is useless."); return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); } static DEVICE_ATTR_RO(hotkey_bios_mask); /* sysfs hotkey all_mask ----------------------------------------------- */ static ssize_t hotkey_all_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask | hotkey_source_mask); } static DEVICE_ATTR_RO(hotkey_all_mask); /* sysfs hotkey all_mask ----------------------------------------------- */ static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_adaptive_all_mask | hotkey_source_mask); } static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); /* sysfs hotkey recommended_mask --------------------------------------- */ static ssize_t hotkey_recommended_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", (hotkey_all_mask | hotkey_source_mask) & ~hotkey_reserved_mask); } static DEVICE_ATTR_RO(hotkey_recommended_mask); #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL /* sysfs hotkey hotkey_source_mask ------------------------------------- */ static ssize_t hotkey_source_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); } static ssize_t hotkey_source_mask_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; u32 r_ev; int rc; if (parse_strtoul(buf, 0xffffffffUL, &t) || ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) return -EINVAL; if (mutex_lock_killable(&hotkey_mutex)) return -ERESTARTSYS; HOTKEY_CONFIG_CRITICAL_START hotkey_source_mask = t; HOTKEY_CONFIG_CRITICAL_END rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & ~hotkey_source_mask); hotkey_poll_setup(true); /* check if events needed by the driver got disabled */ r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; mutex_unlock(&hotkey_mutex); if (rc < 0) pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); if (r_ev) pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", r_ev); tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); return (rc < 0) ? rc : count; } static DEVICE_ATTR_RW(hotkey_source_mask); /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ static ssize_t hotkey_poll_freq_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); } static ssize_t hotkey_poll_freq_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 25, &t)) return -EINVAL; if (mutex_lock_killable(&hotkey_mutex)) return -ERESTARTSYS; hotkey_poll_set_freq(t); hotkey_poll_setup(true); mutex_unlock(&hotkey_mutex); tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); return count; } static DEVICE_ATTR_RW(hotkey_poll_freq); #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ static ssize_t hotkey_radio_sw_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; res = hotkey_get_wlsw(); if (res < 0) return res; /* Opportunistic update */ tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); return snprintf(buf, PAGE_SIZE, "%d\n", (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); } static DEVICE_ATTR_RO(hotkey_radio_sw); static void hotkey_radio_sw_notify_change(void) { if (tp_features.hotkey_wlsw) sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "hotkey_radio_sw"); } /* sysfs hotkey tablet mode (pollable) --------------------------------- */ static ssize_t hotkey_tablet_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, s; res = hotkey_get_tablet_mode(&s); if (res < 0) return res; return snprintf(buf, PAGE_SIZE, "%d\n", !!s); } static DEVICE_ATTR_RO(hotkey_tablet_mode); static void hotkey_tablet_mode_notify_change(void) { if (tp_features.hotkey_tablet) sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "hotkey_tablet_mode"); } /* sysfs wakeup reason (pollable) -------------------------------------- */ static ssize_t hotkey_wakeup_reason_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); } static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); static void hotkey_wakeup_reason_notify_change(void) { sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "wakeup_reason"); } /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); } static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, hotkey_wakeup_hotunplug_complete_show, NULL); static void hotkey_wakeup_hotunplug_complete_notify_change(void) { sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "wakeup_hotunplug_complete"); } /* sysfs adaptive kbd mode --------------------------------------------- */ static int adaptive_keyboard_get_mode(void); static int adaptive_keyboard_set_mode(int new_mode); enum ADAPTIVE_KEY_MODE { HOME_MODE, WEB_BROWSER_MODE, WEB_CONFERENCE_MODE, FUNCTION_MODE, LAYFLAT_MODE }; static ssize_t adaptive_kbd_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { int current_mode; current_mode = adaptive_keyboard_get_mode(); if (current_mode < 0) return current_mode; return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); } static ssize_t adaptive_kbd_mode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res; if (parse_strtoul(buf, LAYFLAT_MODE, &t)) return -EINVAL; res = adaptive_keyboard_set_mode(t); return (res < 0) ? res : count; } static DEVICE_ATTR_RW(adaptive_kbd_mode); static struct attribute *adaptive_kbd_attributes[] = { &dev_attr_adaptive_kbd_mode.attr, NULL }; static const struct attribute_group adaptive_kbd_attr_group = { .attrs = adaptive_kbd_attributes, }; /* --------------------------------------------------------------------- */ static struct attribute *hotkey_attributes[] __initdata = { &dev_attr_hotkey_enable.attr, &dev_attr_hotkey_bios_enabled.attr, &dev_attr_hotkey_bios_mask.attr, &dev_attr_wakeup_reason.attr, &dev_attr_wakeup_hotunplug_complete.attr, &dev_attr_hotkey_mask.attr, &dev_attr_hotkey_all_mask.attr, &dev_attr_hotkey_adaptive_all_mask.attr, &dev_attr_hotkey_recommended_mask.attr, #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL &dev_attr_hotkey_source_mask.attr, &dev_attr_hotkey_poll_freq.attr, #endif }; /* * Sync both the hw and sw blocking state of all switches */ static void tpacpi_send_radiosw_update(void) { int wlsw; /* * We must sync all rfkill controllers *before* issuing any * rfkill input events, or we will race the rfkill core input * handler. * * tpacpi_inputdev_send_mutex works as a synchronization point * for the above. * * We optimize to avoid numerous calls to hotkey_get_wlsw. */ wlsw = hotkey_get_wlsw(); /* Sync hw blocking state first if it is hw-blocked */ if (wlsw == TPACPI_RFK_RADIO_OFF) tpacpi_rfk_update_hwblock_state(true); /* Sync sw blocking state */ tpacpi_rfk_update_swstate_all(); /* Sync hw blocking state last if it is hw-unblocked */ if (wlsw == TPACPI_RFK_RADIO_ON) tpacpi_rfk_update_hwblock_state(false); /* Issue rfkill input event for WLSW switch */ if (!(wlsw < 0)) { mutex_lock(&tpacpi_inputdev_send_mutex); input_report_switch(tpacpi_inputdev, SW_RFKILL_ALL, (wlsw > 0)); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } /* * this can be unconditional, as we will poll state again * if userspace uses the notify to read data */ hotkey_radio_sw_notify_change(); } static void hotkey_exit(void) { #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL mutex_lock(&hotkey_mutex); hotkey_poll_stop_sync(); mutex_unlock(&hotkey_mutex); #endif if (hotkey_dev_attributes) delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, "restoring original HKEY status and mask\n"); /* yes, there is a bitwise or below, we want the * functions to be called even if one of them fail */ if (((tp_features.hotkey_mask && hotkey_mask_set(hotkey_orig_mask)) | hotkey_status_set(false)) != 0) pr_err("failed to restore hot key mask to BIOS defaults\n"); } static void __init hotkey_unmap(const unsigned int scancode) { if (hotkey_keycode_map[scancode] != KEY_RESERVED) { clear_bit(hotkey_keycode_map[scancode], tpacpi_inputdev->keybit); hotkey_keycode_map[scancode] = KEY_RESERVED; } } /* * HKEY quirks: * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 */ #define TPACPI_HK_Q_INIMASK 0x0001 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ }; typedef u16 tpacpi_keymap_entry_t; typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; static int hotkey_init_tablet_mode(void) { int in_tablet_mode = 0, res; char *type = NULL; if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { int has_tablet_mode; in_tablet_mode = hotkey_gmms_get_tablet_mode(res, &has_tablet_mode); if (has_tablet_mode) tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; type = "GMMS"; } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { /* For X41t, X60t, X61t Tablets... */ tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); type = "MHKG"; } if (!tp_features.hotkey_tablet) return 0; pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", type, in_tablet_mode ? "tablet" : "laptop"); res = add_to_attr_set(hotkey_dev_attributes, &dev_attr_hotkey_tablet_mode.attr); if (res) return -1; return in_tablet_mode; } static int __init hotkey_init(struct ibm_init_struct *iibm) { /* Requirements for changing the default keymaps: * * 1. Many of the keys are mapped to KEY_RESERVED for very * good reasons. Do not change them unless you have deep * knowledge on the IBM and Lenovo ThinkPad firmware for * the various ThinkPad models. The driver behaves * differently for KEY_RESERVED: such keys have their * hot key mask *unset* in mask_recommended, and also * in the initial hot key mask programmed into the * firmware at driver load time, which means the firm- * ware may react very differently if you change them to * something else; * * 2. You must be subscribed to the linux-thinkpad and * ibm-acpi-devel mailing lists, and you should read the * list archives since 2007 if you want to change the * keymaps. This requirement exists so that you will * know the past history of problems with the thinkpad- * acpi driver keymaps, and also that you will be * listening to any bug reports; * * 3. Do not send thinkpad-acpi specific patches directly to * for merging, *ever*. Send them to the linux-acpi * mailinglist for comments. Merging is to be done only * through acpi-test and the ACPI maintainer. * * If the above is too much to ask, don't change the keymap. * Ask the thinkpad-acpi maintainer to do it, instead. */ enum keymap_index { TPACPI_KEYMAP_IBM_GENERIC = 0, TPACPI_KEYMAP_LENOVO_GENERIC, }; static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { /* Generic keymap for IBM ThinkPads */ [TPACPI_KEYMAP_IBM_GENERIC] = { /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ KEY_UNKNOWN, /* 0x0D: FN+INSERT */ KEY_UNKNOWN, /* 0x0E: FN+DELETE */ /* brightness: firmware always reacts to them */ KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ KEY_RESERVED, /* 0x10: FN+END (brightness down) */ /* Thinklight: firmware always react to it */ KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ /* Volume: firmware always react to it and reprograms * the built-in *extra* mixer. Never map it to control * another mixer by default. */ KEY_RESERVED, /* 0x14: VOLUME UP */ KEY_RESERVED, /* 0x15: VOLUME DOWN */ KEY_RESERVED, /* 0x16: MUTE */ KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ /* (assignments unknown, please report if found) */ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, /* No assignments, only used for Adaptive keyboards. */ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, /* No assignment, used for newer Lenovo models */ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN }, /* Generic keymap for Lenovo ThinkPads */ [TPACPI_KEYMAP_LENOVO_GENERIC] = { /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ KEY_UNKNOWN, /* 0x0D: FN+INSERT */ KEY_UNKNOWN, /* 0x0E: FN+DELETE */ /* These should be enabled --only-- when ACPI video * is disabled (i.e. in "vendor" mode), and are handled * in a special way by the init code */ KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ /* Volume: z60/z61, T60 (BIOS version?): firmware always * react to it and reprograms the built-in *extra* mixer. * Never map it to control another mixer by default. * * T60?, T61, R60?, R61: firmware and EC tries to send * these over the regular keyboard, so these are no-ops, * but there are still weird bugs re. MUTE, so do not * change unless you get test reports from all Lenovo * models. May cause the BIOS to interfere with the * HDA mixer. */ KEY_RESERVED, /* 0x14: VOLUME UP */ KEY_RESERVED, /* 0x15: VOLUME DOWN */ KEY_RESERVED, /* 0x16: MUTE */ KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ /* (assignments unknown, please report if found) */ KEY_UNKNOWN, KEY_UNKNOWN, /* * The mic mute button only sends 0x1a. It does not * automatically mute the mic or change the mute light. */ KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ /* (assignments unknown, please report if found) */ KEY_UNKNOWN, /* Extra keys in use since the X240 / T440 / T540 */ KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, /* * These are the adaptive keyboard keycodes for Carbon X1 2014. * The first item in this list is the Mute button which is * emitted with 0x103 through * adaptive_keyboard_hotkey_notify_hotkey() when the sound * symbol is held. * We'll need to offset those by 0x20. */ KEY_RESERVED, /* Mute held, 0x103 */ KEY_BRIGHTNESS_MIN, /* Backlight off */ KEY_RESERVED, /* Clipping tool */ KEY_RESERVED, /* Cloud */ KEY_RESERVED, KEY_VOICECOMMAND, /* Voice */ KEY_RESERVED, KEY_RESERVED, /* Gestures */ KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_CONFIG, /* Settings */ KEY_RESERVED, /* New tab */ KEY_REFRESH, /* Reload */ KEY_BACK, /* Back */ KEY_RESERVED, /* Microphone down */ KEY_RESERVED, /* Microphone up */ KEY_RESERVED, /* Microphone cancellation */ KEY_RESERVED, /* Camera mode */ KEY_RESERVED, /* Rotate display, 0x116 */ /* * These are found in 2017 models (e.g. T470s, X270). * The lowest known value is 0x311, which according to * the manual should launch a user defined favorite * application. * * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, * corresponding to 0x34. */ /* (assignments unknown, please report if found) */ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_BOOKMARKS, /* Favorite app, 0x311 */ KEY_RESERVED, /* Clipping tool */ KEY_CALC, /* Calculator (above numpad, P52) */ KEY_BLUETOOTH, /* Bluetooth */ KEY_KEYBOARD /* Keyboard, 0x315 */ }, }; static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { /* Generic maps (fallback) */ { .vendor = PCI_VENDOR_ID_IBM, .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, .quirks = TPACPI_KEYMAP_IBM_GENERIC, }, { .vendor = PCI_VENDOR_ID_LENOVO, .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, }, }; #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) int res, i; int status; int hkeyv; bool radiosw_state = false; bool tabletsw_state = false; unsigned long quirks; unsigned long keymap_id; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "initializing hotkey subdriver\n"); BUG_ON(!tpacpi_inputdev); BUG_ON(tpacpi_inputdev->open != NULL || tpacpi_inputdev->close != NULL); TPACPI_ACPIHANDLE_INIT(hkey); mutex_init(&hotkey_mutex); #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL mutex_init(&hotkey_thread_data_mutex); #endif /* hotkey not supported on 570 */ tp_features.hotkey = hkey_handle != NULL; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "hotkeys are %s\n", str_supported(tp_features.hotkey)); if (!tp_features.hotkey) return 1; quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, ARRAY_SIZE(tpacpi_hotkey_qtable)); tpacpi_disable_brightness_delay(); /* MUST have enough space for all attributes to be added to * hotkey_dev_attributes */ hotkey_dev_attributes = create_attr_set( ARRAY_SIZE(hotkey_attributes) + 2, NULL); if (!hotkey_dev_attributes) return -ENOMEM; res = add_many_to_attr_set(hotkey_dev_attributes, hotkey_attributes, ARRAY_SIZE(hotkey_attributes)); if (res) goto err_exit; /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking for HKEY interface version 0x100 */ if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "firmware HKEY interface version: 0x%x\n", hkeyv); switch (hkeyv >> 8) { case 1: /* * MHKV 0x100 in A31, R40, R40e, * T4x, X31, and later */ /* Paranoia check AND init hotkey_all_mask */ if (!acpi_evalf(hkey_handle, &hotkey_all_mask, "MHKA", "qd")) { pr_err("missing MHKA handler, please report this to %s\n", TPACPI_MAIL); /* Fallback: pre-init for FN+F3,F4,F12 */ hotkey_all_mask = 0x080cU; } else { tp_features.hotkey_mask = 1; } break; case 2: /* * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) */ /* Paranoia check AND init hotkey_all_mask */ if (!acpi_evalf(hkey_handle, &hotkey_all_mask, "MHKA", "dd", 1)) { pr_err("missing MHKA handler, please report this to %s\n", TPACPI_MAIL); /* Fallback: pre-init for FN+F3,F4,F12 */ hotkey_all_mask = 0x080cU; } else { tp_features.hotkey_mask = 1; } /* * Check if we have an adaptive keyboard, like on the * Lenovo Carbon X1 2014 (2nd Gen). */ if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, "MHKA", "dd", 2)) { if (hotkey_adaptive_all_mask != 0) { tp_features.has_adaptive_kbd = true; res = sysfs_create_group( &tpacpi_pdev->dev.kobj, &adaptive_kbd_attr_group); if (res) goto err_exit; } } else { tp_features.has_adaptive_kbd = false; hotkey_adaptive_all_mask = 0x0U; } break; default: pr_err("unknown version of the HKEY interface: 0x%x\n", hkeyv); pr_err("please report this to %s\n", TPACPI_MAIL); break; } } vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "hotkey masks are %s\n", str_supported(tp_features.hotkey_mask)); /* Init hotkey_all_mask if not initialized yet */ if (!tp_features.hotkey_mask && !hotkey_all_mask && (quirks & TPACPI_HK_Q_INIMASK)) hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ /* Init hotkey_acpi_mask and hotkey_orig_mask */ if (tp_features.hotkey_mask) { /* hotkey_source_mask *must* be zero for * the first hotkey_mask_get to return hotkey_orig_mask */ res = hotkey_mask_get(); if (res) goto err_exit; hotkey_orig_mask = hotkey_acpi_mask; } else { hotkey_orig_mask = hotkey_all_mask; hotkey_acpi_mask = hotkey_all_mask; } #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_wlswemul) { tp_features.hotkey_wlsw = 1; radiosw_state = !!tpacpi_wlsw_emulstate; pr_info("radio switch emulation enabled\n"); } else #endif /* Not all thinkpads have a hardware radio switch */ if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { tp_features.hotkey_wlsw = 1; radiosw_state = !!status; pr_info("radio switch found; radios are %s\n", enabled(status, 0)); } if (tp_features.hotkey_wlsw) res = add_to_attr_set(hotkey_dev_attributes, &dev_attr_hotkey_radio_sw.attr); res = hotkey_init_tablet_mode(); if (res < 0) goto err_exit; tabletsw_state = res; res = register_attr_set_with_sysfs(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); if (res) goto err_exit; /* Set up key map */ keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, ARRAY_SIZE(tpacpi_keymap_qtable)); BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "using keymap number %lu\n", keymap_id); hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); if (!hotkey_keycode_map) { pr_err("failed to allocate memory for key map\n"); res = -ENOMEM; goto err_exit; } input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; tpacpi_inputdev->keycode = hotkey_keycode_map; for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { if (hotkey_keycode_map[i] != KEY_RESERVED) { input_set_capability(tpacpi_inputdev, EV_KEY, hotkey_keycode_map[i]); } else { if (i < sizeof(hotkey_reserved_mask)*8) hotkey_reserved_mask |= 1 << i; } } if (tp_features.hotkey_wlsw) { input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); input_report_switch(tpacpi_inputdev, SW_RFKILL_ALL, radiosw_state); } if (tp_features.hotkey_tablet) { input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); input_report_switch(tpacpi_inputdev, SW_TABLET_MODE, tabletsw_state); } /* Do not issue duplicate brightness change events to * userspace. tpacpi_detect_brightness_capabilities() must have * been called before this point */ if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); /* Disable brightness up/down on Lenovo thinkpads when * ACPI is handling them, otherwise it is plain impossible * for userspace to do something even remotely sane */ hotkey_reserved_mask |= (1 << TP_ACPI_HOTKEYSCAN_FNHOME) | (1 << TP_ACPI_HOTKEYSCAN_FNEND); hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); } #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK & ~hotkey_all_mask & ~hotkey_reserved_mask; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "hotkey source mask 0x%08x, polling freq %u\n", hotkey_source_mask, hotkey_poll_freq); #endif dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "enabling firmware HKEY event interface...\n"); res = hotkey_status_set(true); if (res) { hotkey_exit(); return res; } res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) | hotkey_driver_mask) & ~hotkey_source_mask); if (res < 0 && res != -ENXIO) { hotkey_exit(); return res; } hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) & ~hotkey_reserved_mask; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); tpacpi_inputdev->open = &hotkey_inputdev_open; tpacpi_inputdev->close = &hotkey_inputdev_close; hotkey_poll_setup_safe(true); return 0; err_exit: delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); sysfs_remove_group(&tpacpi_pdev->dev.kobj, &adaptive_kbd_attr_group); hotkey_dev_attributes = NULL; return (res < 0) ? res : 1; } /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser * mode, Web conference mode, Function mode and Lay-flat mode. * We support Home mode and Function mode currently. * * Will consider support rest of modes in future. * */ static const int adaptive_keyboard_modes[] = { HOME_MODE, /* WEB_BROWSER_MODE = 2, WEB_CONFERENCE_MODE = 3, */ FUNCTION_MODE }; #define DFR_CHANGE_ROW 0x101 #define DFR_SHOW_QUICKVIEW_ROW 0x102 #define FIRST_ADAPTIVE_KEY 0x103 /* press Fn key a while second, it will switch to Function Mode. Then * release Fn key, previous mode be restored. */ static bool adaptive_keyboard_mode_is_saved; static int adaptive_keyboard_prev_mode; static int adaptive_keyboard_get_mode(void) { int mode = 0; if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { pr_err("Cannot read adaptive keyboard mode\n"); return -EIO; } return mode; } static int adaptive_keyboard_set_mode(int new_mode) { if (new_mode < 0 || new_mode > LAYFLAT_MODE) return -EINVAL; if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { pr_err("Cannot set adaptive keyboard mode\n"); return -EIO; } return 0; } static int adaptive_keyboard_get_next_mode(int mode) { size_t i; size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; for (i = 0; i <= max_mode; i++) { if (adaptive_keyboard_modes[i] == mode) break; } if (i >= max_mode) i = 0; else i++; return adaptive_keyboard_modes[i]; } static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) { int current_mode = 0; int new_mode = 0; int keycode; switch (scancode) { case DFR_CHANGE_ROW: if (adaptive_keyboard_mode_is_saved) { new_mode = adaptive_keyboard_prev_mode; adaptive_keyboard_mode_is_saved = false; } else { current_mode = adaptive_keyboard_get_mode(); if (current_mode < 0) return false; new_mode = adaptive_keyboard_get_next_mode( current_mode); } if (adaptive_keyboard_set_mode(new_mode) < 0) return false; return true; case DFR_SHOW_QUICKVIEW_ROW: current_mode = adaptive_keyboard_get_mode(); if (current_mode < 0) return false; adaptive_keyboard_prev_mode = current_mode; adaptive_keyboard_mode_is_saved = true; if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) return false; return true; default: if (scancode < FIRST_ADAPTIVE_KEY || scancode >= FIRST_ADAPTIVE_KEY + TP_ACPI_HOTKEYSCAN_EXTENDED_START - TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { pr_info("Unhandled adaptive keyboard key: 0x%x\n", scancode); return false; } keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; if (keycode != KEY_RESERVED) { mutex_lock(&tpacpi_inputdev_send_mutex); input_report_key(tpacpi_inputdev, keycode, 1); input_sync(tpacpi_inputdev); input_report_key(tpacpi_inputdev, keycode, 0); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } return true; } } static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev, bool *ignore_acpi_ev) { /* 0x1000-0x1FFF: key presses */ unsigned int scancode = hkey & 0xfff; *send_acpi_ev = true; *ignore_acpi_ev = false; /* * Original events are in the 0x10XX range, the adaptive keyboard * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 * models, additional keys are emitted through 0x13XX. */ switch ((hkey >> 8) & 0xf) { case 0: if (scancode > 0 && scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { /* HKEY event 0x1001 is scancode 0x00 */ scancode--; if (!(hotkey_source_mask & (1 << scancode))) { tpacpi_input_send_key_masked(scancode); *send_acpi_ev = false; } else { *ignore_acpi_ev = true; } return true; } break; case 1: return adaptive_keyboard_hotkey_notify_hotkey(scancode); case 3: /* Extended keycodes start at 0x300 and our offset into the map * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode * will be positive, but might not be in the correct range. */ scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && scancode < TPACPI_HOTKEY_MAP_LEN) { tpacpi_input_send_key(scancode); return true; } break; } return false; } static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev, bool *ignore_acpi_ev) { /* 0x2000-0x2FFF: Wakeup reason */ *send_acpi_ev = true; *ignore_acpi_ev = false; switch (hkey) { case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; *ignore_acpi_ev = true; break; case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; *ignore_acpi_ev = true; break; case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); /* how to auto-heal: */ /* 2313: woke up from S3, go to S4/S5 */ /* 2413: woke up from S4, go to S5 */ break; default: return false; } if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { pr_info("woke up due to a hot-unplug request...\n"); hotkey_wakeup_reason_notify_change(); } return true; } static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev, bool *ignore_acpi_ev) { /* 0x4000-0x4FFF: dock-related events */ *send_acpi_ev = true; *ignore_acpi_ev = false; switch (hkey) { case TP_HKEY_EV_UNDOCK_ACK: /* ACPI undock operation completed after wakeup */ hotkey_autosleep_ack = 1; pr_info("undocked\n"); hotkey_wakeup_hotunplug_complete_notify_change(); return true; case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ pr_info("docked into hotplug port replicator\n"); return true; case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ pr_info("undocked from hotplug port replicator\n"); return true; default: return false; } } static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev, bool *ignore_acpi_ev) { /* 0x5000-0x5FFF: human interface helpers */ *send_acpi_ev = true; *ignore_acpi_ev = false; switch (hkey) { case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ return true; case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ tpacpi_input_send_tabletsw(); hotkey_tablet_mode_notify_change(); *send_acpi_ev = false; return true; case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ case TP_HKEY_EV_LID_OPEN: /* Lid opened */ case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ /* do not propagate these events */ *ignore_acpi_ev = true; return true; default: return false; } } static void thermal_dump_all_sensors(void); static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev, bool *ignore_acpi_ev) { /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ *send_acpi_ev = true; *ignore_acpi_ev = false; switch (hkey) { case TP_HKEY_EV_THM_TABLE_CHANGED: pr_debug("EC reports: Thermal Table has changed\n"); /* recommended action: do nothing, we don't have * Lenovo ATM information */ return true; case TP_HKEY_EV_THM_CSM_COMPLETED: pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); /* recommended action: do nothing, we don't have * Lenovo ATM information */ return true; case TP_HKEY_EV_THM_TRANSFM_CHANGED: pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); /* recommended action: do nothing, we don't have * Lenovo ATM information */ return true; case TP_HKEY_EV_ALARM_BAT_HOT: pr_crit("THERMAL ALARM: battery is too hot!\n"); /* recommended action: warn user through gui */ break; case TP_HKEY_EV_ALARM_BAT_XHOT: pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); /* recommended action: immediate sleep/hibernate */ break; case TP_HKEY_EV_ALARM_SENSOR_HOT: pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); /* recommended action: warn user through gui, that */ /* some internal component is too hot */ break; case TP_HKEY_EV_ALARM_SENSOR_XHOT: pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); /* recommended action: immediate sleep/hibernate */ break; case TP_HKEY_EV_AC_CHANGED: /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: * AC status changed; can be triggered by plugging or * unplugging AC adapter, docking or undocking. */ /* fallthrough */ case TP_HKEY_EV_KEY_NUMLOCK: case TP_HKEY_EV_KEY_FN: case TP_HKEY_EV_KEY_FN_ESC: /* key press events, we just ignore them as long as the EC * is still reporting them in the normal keyboard stream */ *send_acpi_ev = false; *ignore_acpi_ev = true; return true; case TP_HKEY_EV_TABLET_CHANGED: tpacpi_input_send_tabletsw(); hotkey_tablet_mode_notify_change(); *send_acpi_ev = false; return true; case TP_HKEY_EV_PALM_DETECTED: case TP_HKEY_EV_PALM_UNDETECTED: /* palm detected hovering the keyboard, forward to user-space * via netlink for consumption */ return true; default: /* report simply as unknown, no sensor dump */ return false; } thermal_dump_all_sensors(); return true; } static void hotkey_notify(struct ibm_struct *ibm, u32 event) { u32 hkey; bool send_acpi_ev; bool ignore_acpi_ev; bool known_ev; if (event != 0x80) { pr_err("unknown HKEY notification event %d\n", event); /* forward it to userspace, maybe it knows how to handle it */ acpi_bus_generate_netlink_event( ibm->acpi->device->pnp.device_class, dev_name(&ibm->acpi->device->dev), event, 0); return; } while (1) { if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { pr_err("failed to retrieve HKEY event\n"); return; } if (hkey == 0) { /* queue empty */ return; } send_acpi_ev = true; ignore_acpi_ev = false; switch (hkey >> 12) { case 1: /* 0x1000-0x1FFF: key presses */ known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, &ignore_acpi_ev); break; case 2: /* 0x2000-0x2FFF: Wakeup reason */ known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, &ignore_acpi_ev); break; case 3: /* 0x3000-0x3FFF: bay-related wakeups */ switch (hkey) { case TP_HKEY_EV_BAYEJ_ACK: hotkey_autosleep_ack = 1; pr_info("bay ejected\n"); hotkey_wakeup_hotunplug_complete_notify_change(); known_ev = true; break; case TP_HKEY_EV_OPTDRV_EJ: /* FIXME: kick libata if SATA link offline */ known_ev = true; break; default: known_ev = false; } break; case 4: /* 0x4000-0x4FFF: dock-related events */ known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, &ignore_acpi_ev); break; case 5: /* 0x5000-0x5FFF: human interface helpers */ known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, &ignore_acpi_ev); break; case 6: /* 0x6000-0x6FFF: thermal alarms/notices and * keyboard events */ known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, &ignore_acpi_ev); break; case 7: /* 0x7000-0x7FFF: misc */ if (tp_features.hotkey_wlsw && hkey == TP_HKEY_EV_RFKILL_CHANGED) { tpacpi_send_radiosw_update(); send_acpi_ev = 0; known_ev = true; break; } /* fallthrough - to default */ default: known_ev = false; } if (!known_ev) { pr_notice("unhandled HKEY event 0x%04x\n", hkey); pr_notice("please report the conditions when this event happened to %s\n", TPACPI_MAIL); } /* netlink events */ if (!ignore_acpi_ev && send_acpi_ev) { acpi_bus_generate_netlink_event( ibm->acpi->device->pnp.device_class, dev_name(&ibm->acpi->device->dev), event, hkey); } } } static void hotkey_suspend(void) { /* Do these on suspend, we get the events on early resume! */ hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; hotkey_autosleep_ack = 0; /* save previous mode of adaptive keyboard of X1 Carbon */ if (tp_features.has_adaptive_kbd) { if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, "GTRW", "dd", 0)) { pr_err("Cannot read adaptive keyboard mode.\n"); } } } static void hotkey_resume(void) { tpacpi_disable_brightness_delay(); if (hotkey_status_set(true) < 0 || hotkey_mask_set(hotkey_acpi_mask) < 0) pr_err("error while attempting to reset the event firmware interface\n"); tpacpi_send_radiosw_update(); hotkey_tablet_mode_notify_change(); hotkey_wakeup_reason_notify_change(); hotkey_wakeup_hotunplug_complete_notify_change(); hotkey_poll_setup_safe(false); /* restore previous mode of adapive keyboard of X1 Carbon */ if (tp_features.has_adaptive_kbd) { if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", adaptive_keyboard_prev_mode)) { pr_err("Cannot set adaptive keyboard mode.\n"); } } } /* procfs -------------------------------------------------------------- */ static int hotkey_read(struct seq_file *m) { int res, status; if (!tp_features.hotkey) { seq_printf(m, "status:\t\tnot supported\n"); return 0; } if (mutex_lock_killable(&hotkey_mutex)) return -ERESTARTSYS; res = hotkey_status_get(&status); if (!res) res = hotkey_mask_get(); mutex_unlock(&hotkey_mutex); if (res) return res; seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); if (hotkey_all_mask) { seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); } else { seq_printf(m, "mask:\t\tnot supported\n"); seq_printf(m, "commands:\tenable, disable, reset\n"); } return 0; } static void hotkey_enabledisable_warn(bool enable) { tpacpi_log_usertask("procfs hotkey enable/disable"); if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); } static int hotkey_write(char *buf) { int res; u32 mask; char *cmd; if (!tp_features.hotkey) return -ENODEV; if (mutex_lock_killable(&hotkey_mutex)) return -ERESTARTSYS; mask = hotkey_user_mask; res = 0; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "enable") == 0) { hotkey_enabledisable_warn(1); } else if (strlencmp(cmd, "disable") == 0) { hotkey_enabledisable_warn(0); res = -EPERM; } else if (strlencmp(cmd, "reset") == 0) { mask = (hotkey_all_mask | hotkey_source_mask) & ~hotkey_reserved_mask; } else if (sscanf(cmd, "0x%x", &mask) == 1) { /* mask set */ } else if (sscanf(cmd, "%x", &mask) == 1) { /* mask set */ } else { res = -EINVAL; goto errexit; } } if (!res) { tpacpi_disclose_usertask("procfs hotkey", "set mask to 0x%08x\n", mask); res = hotkey_user_mask_set(mask); } errexit: mutex_unlock(&hotkey_mutex); return res; } static const struct acpi_device_id ibm_htk_device_ids[] = { {TPACPI_ACPI_IBM_HKEY_HID, 0}, {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, {"", 0}, }; static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { .hid = ibm_htk_device_ids, .notify = hotkey_notify, .handle = &hkey_handle, .type = ACPI_DEVICE_NOTIFY, }; static struct ibm_struct hotkey_driver_data = { .name = "hotkey", .read = hotkey_read, .write = hotkey_write, .exit = hotkey_exit, .resume = hotkey_resume, .suspend = hotkey_suspend, .acpi = &ibm_hotkey_acpidriver, }; /************************************************************************* * Bluetooth subdriver */ enum { /* ACPI GBDC/SBDC bits */ TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 0 = disable, 1 = enable */ }; enum { /* ACPI \BLTH commands */ TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ }; #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" static int bluetooth_get_status(void) { int status; #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_bluetoothemul) return (tpacpi_bluetooth_emulstate) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) return -EIO; return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } static int bluetooth_set_status(enum tpacpi_rfkill_state state) { int status; vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n", (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_bluetoothemul) { tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); return 0; } #endif if (state == TPACPI_RFK_RADIO_ON) status = TP_ACPI_BLUETOOTH_RADIOSSW | TP_ACPI_BLUETOOTH_RESUMECTRL; else status = 0; if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) return -EIO; return 0; } /* sysfs bluetooth enable ---------------------------------------------- */ static ssize_t bluetooth_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, attr, buf); } static ssize_t bluetooth_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, attr, buf, count); } static DEVICE_ATTR_RW(bluetooth_enable); /* --------------------------------------------------------------------- */ static struct attribute *bluetooth_attributes[] = { &dev_attr_bluetooth_enable.attr, NULL }; static const struct attribute_group bluetooth_attr_group = { .attrs = bluetooth_attributes, }; static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { .get_status = bluetooth_get_status, .set_status = bluetooth_set_status, }; static void bluetooth_shutdown(void) { /* Order firmware to save current state to NVRAM */ if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", TP_ACPI_BLTH_SAVE_STATE)) pr_notice("failed to save bluetooth state to NVRAM\n"); else vdbg_printk(TPACPI_DBG_RFKILL, "bluetooth state saved to NVRAM\n"); } static void bluetooth_exit(void) { sysfs_remove_group(&tpacpi_pdev->dev.kobj, &bluetooth_attr_group); tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); bluetooth_shutdown(); } static const struct dmi_system_id bt_fwbug_list[] __initconst = { { .ident = "ThinkPad E485", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_BOARD_NAME, "20KU"), }, }, { .ident = "ThinkPad E585", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_BOARD_NAME, "20KV"), }, }, { .ident = "ThinkPad A285 - 20MW", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_BOARD_NAME, "20MW"), }, }, { .ident = "ThinkPad A285 - 20MX", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_BOARD_NAME, "20MX"), }, }, { .ident = "ThinkPad A485 - 20MU", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_BOARD_NAME, "20MU"), }, }, { .ident = "ThinkPad A485 - 20MV", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), DMI_MATCH(DMI_BOARD_NAME, "20MV"), }, }, {} }; static const struct pci_device_id fwbug_cards_ids[] __initconst = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, {} }; static int __init have_bt_fwbug(void) { /* * Some AMD based ThinkPads have a firmware bug that calling * "GBDC" will cause bluetooth on Intel wireless cards blocked */ if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, FW_BUG "disable bluetooth subdriver for Intel cards\n"); return 1; } else return 0; } static int __init bluetooth_init(struct ibm_init_struct *iibm) { int res; int status = 0; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "initializing bluetooth subdriver\n"); TPACPI_ACPIHANDLE_INIT(hkey); /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && acpi_evalf(hkey_handle, &status, "GBDC", "qd"); vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "bluetooth is %s, status 0x%02x\n", str_supported(tp_features.bluetooth), status); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_bluetoothemul) { tp_features.bluetooth = 1; pr_info("bluetooth switch emulation enabled\n"); } else #endif if (tp_features.bluetooth && !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { /* no bluetooth hardware present in system */ tp_features.bluetooth = 0; dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "bluetooth hardware not installed\n"); } if (!tp_features.bluetooth) return 1; res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, &bluetooth_tprfk_ops, RFKILL_TYPE_BLUETOOTH, TPACPI_RFK_BLUETOOTH_SW_NAME, true); if (res) return res; res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &bluetooth_attr_group); if (res) { tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); return res; } return 0; } /* procfs -------------------------------------------------------------- */ static int bluetooth_read(struct seq_file *m) { return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); } static int bluetooth_write(char *buf) { return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); } static struct ibm_struct bluetooth_driver_data = { .name = "bluetooth", .read = bluetooth_read, .write = bluetooth_write, .exit = bluetooth_exit, .shutdown = bluetooth_shutdown, }; /************************************************************************* * Wan subdriver */ enum { /* ACPI GWAN/SWAN bits */ TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 0 = disable, 1 = enable */ }; #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" static int wan_get_status(void) { int status; #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_wwanemul) return (tpacpi_wwan_emulstate) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) return -EIO; return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } static int wan_set_status(enum tpacpi_rfkill_state state) { int status; vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n", (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_wwanemul) { tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); return 0; } #endif if (state == TPACPI_RFK_RADIO_ON) status = TP_ACPI_WANCARD_RADIOSSW | TP_ACPI_WANCARD_RESUMECTRL; else status = 0; if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) return -EIO; return 0; } /* sysfs wan enable ---------------------------------------------------- */ static ssize_t wan_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, attr, buf); } static ssize_t wan_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, attr, buf, count); } static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, wan_enable_show, wan_enable_store); /* --------------------------------------------------------------------- */ static struct attribute *wan_attributes[] = { &dev_attr_wwan_enable.attr, NULL }; static const struct attribute_group wan_attr_group = { .attrs = wan_attributes, }; static const struct tpacpi_rfk_ops wan_tprfk_ops = { .get_status = wan_get_status, .set_status = wan_set_status, }; static void wan_shutdown(void) { /* Order firmware to save current state to NVRAM */ if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", TP_ACPI_WGSV_SAVE_STATE)) pr_notice("failed to save WWAN state to NVRAM\n"); else vdbg_printk(TPACPI_DBG_RFKILL, "WWAN state saved to NVRAM\n"); } static void wan_exit(void) { sysfs_remove_group(&tpacpi_pdev->dev.kobj, &wan_attr_group); tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); wan_shutdown(); } static int __init wan_init(struct ibm_init_struct *iibm) { int res; int status = 0; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "initializing wan subdriver\n"); TPACPI_ACPIHANDLE_INIT(hkey); tp_features.wan = hkey_handle && acpi_evalf(hkey_handle, &status, "GWAN", "qd"); vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "wan is %s, status 0x%02x\n", str_supported(tp_features.wan), status); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_wwanemul) { tp_features.wan = 1; pr_info("wwan switch emulation enabled\n"); } else #endif if (tp_features.wan && !(status & TP_ACPI_WANCARD_HWPRESENT)) { /* no wan hardware present in system */ tp_features.wan = 0; dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "wan hardware not installed\n"); } if (!tp_features.wan) return 1; res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, &wan_tprfk_ops, RFKILL_TYPE_WWAN, TPACPI_RFK_WWAN_SW_NAME, true); if (res) return res; res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &wan_attr_group); if (res) { tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); return res; } return 0; } /* procfs -------------------------------------------------------------- */ static int wan_read(struct seq_file *m) { return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); } static int wan_write(char *buf) { return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); } static struct ibm_struct wan_driver_data = { .name = "wan", .read = wan_read, .write = wan_write, .exit = wan_exit, .shutdown = wan_shutdown, }; /************************************************************************* * UWB subdriver */ enum { /* ACPI GUWB/SUWB bits */ TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ }; #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" static int uwb_get_status(void) { int status; #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_uwbemul) return (tpacpi_uwb_emulstate) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; #endif if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) return -EIO; return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; } static int uwb_set_status(enum tpacpi_rfkill_state state) { int status; vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n", (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_uwbemul) { tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); return 0; } #endif if (state == TPACPI_RFK_RADIO_ON) status = TP_ACPI_UWB_RADIOSSW; else status = 0; if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) return -EIO; return 0; } /* --------------------------------------------------------------------- */ static const struct tpacpi_rfk_ops uwb_tprfk_ops = { .get_status = uwb_get_status, .set_status = uwb_set_status, }; static void uwb_exit(void) { tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); } static int __init uwb_init(struct ibm_init_struct *iibm) { int res; int status = 0; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "initializing uwb subdriver\n"); TPACPI_ACPIHANDLE_INIT(hkey); tp_features.uwb = hkey_handle && acpi_evalf(hkey_handle, &status, "GUWB", "qd"); vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, "uwb is %s, status 0x%02x\n", str_supported(tp_features.uwb), status); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES if (dbg_uwbemul) { tp_features.uwb = 1; pr_info("uwb switch emulation enabled\n"); } else #endif if (tp_features.uwb && !(status & TP_ACPI_UWB_HWPRESENT)) { /* no uwb hardware present in system */ tp_features.uwb = 0; dbg_printk(TPACPI_DBG_INIT, "uwb hardware not installed\n"); } if (!tp_features.uwb) return 1; res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, &uwb_tprfk_ops, RFKILL_TYPE_UWB, TPACPI_RFK_UWB_SW_NAME, false); return res; } static struct ibm_struct uwb_driver_data = { .name = "uwb", .exit = uwb_exit, .flags.experimental = 1, }; /************************************************************************* * Video subdriver */ #ifdef CONFIG_THINKPAD_ACPI_VIDEO enum video_access_mode { TPACPI_VIDEO_NONE = 0, TPACPI_VIDEO_570, /* 570 */ TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ TPACPI_VIDEO_NEW, /* all others */ }; enum { /* video status flags, based on VIDEO_570 */ TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ }; enum { /* TPACPI_VIDEO_570 constants */ TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to * video_status_flags */ TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ }; static enum video_access_mode video_supported; static int video_orig_autosw; static int video_autosw_get(void); static int video_autosw_set(int enable); TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ "\\_SB.PCI0.VID0", /* 770e */ "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ "\\_SB.PCI0.AGP.VID", /* all others */ ); /* R30, R31 */ TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ static int __init video_init(struct ibm_init_struct *iibm) { int ivga; vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); TPACPI_ACPIHANDLE_INIT(vid); if (tpacpi_is_ibm()) TPACPI_ACPIHANDLE_INIT(vid2); if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) /* G41, assume IVGA doesn't change */ vid_handle = vid2_handle; if (!vid_handle) /* video switching not supported on R30, R31 */ video_supported = TPACPI_VIDEO_NONE; else if (tpacpi_is_ibm() && acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) /* 570 */ video_supported = TPACPI_VIDEO_570; else if (tpacpi_is_ibm() && acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) /* 600e/x, 770e, 770x */ video_supported = TPACPI_VIDEO_770; else /* all others */ video_supported = TPACPI_VIDEO_NEW; vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", str_supported(video_supported != TPACPI_VIDEO_NONE), video_supported); return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; } static void video_exit(void) { dbg_printk(TPACPI_DBG_EXIT, "restoring original video autoswitch mode\n"); if (video_autosw_set(video_orig_autosw)) pr_err("error while trying to restore original video autoswitch mode\n"); } static int video_outputsw_get(void) { int status = 0; int i; switch (video_supported) { case TPACPI_VIDEO_570: if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", TP_ACPI_VIDEO_570_PHSCMD)) return -EIO; status = i & TP_ACPI_VIDEO_570_PHSMASK; break; case TPACPI_VIDEO_770: if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_LCD; if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_CRT; break; case TPACPI_VIDEO_NEW: if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || !acpi_evalf(NULL, &i, "\\VCDC", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_CRT; if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || !acpi_evalf(NULL, &i, "\\VCDL", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_LCD; if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_DVI; break; default: return -ENOSYS; } return status; } static int video_outputsw_set(int status) { int autosw; int res = 0; switch (video_supported) { case TPACPI_VIDEO_570: res = acpi_evalf(NULL, NULL, "\\_SB.PHS2", "vdd", TP_ACPI_VIDEO_570_PHS2CMD, status | TP_ACPI_VIDEO_570_PHS2SET); break; case TPACPI_VIDEO_770: autosw = video_autosw_get(); if (autosw < 0) return autosw; res = video_autosw_set(1); if (res) return res; res = acpi_evalf(vid_handle, NULL, "ASWT", "vdd", status * 0x100, 0); if (!autosw && video_autosw_set(autosw)) { pr_err("video auto-switch left enabled due to error\n"); return -EIO; } break; case TPACPI_VIDEO_NEW: res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); break; default: return -ENOSYS; } return (res) ? 0 : -EIO; } static int video_autosw_get(void) { int autosw = 0; switch (video_supported) { case TPACPI_VIDEO_570: if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) return -EIO; break; case TPACPI_VIDEO_770: case TPACPI_VIDEO_NEW: if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) return -EIO; break; default: return -ENOSYS; } return autosw & 1; } static int video_autosw_set(int enable) { if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) return -EIO; return 0; } static int video_outputsw_cycle(void) { int autosw = video_autosw_get(); int res; if (autosw < 0) return autosw; switch (video_supported) { case TPACPI_VIDEO_570: res = video_autosw_set(1); if (res) return res; res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); break; case TPACPI_VIDEO_770: case TPACPI_VIDEO_NEW: res = video_autosw_set(1); if (res) return res; res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); break; default: return -ENOSYS; } if (!autosw && video_autosw_set(autosw)) { pr_err("video auto-switch left enabled due to error\n"); return -EIO; } return (res) ? 0 : -EIO; } static int video_expand_toggle(void) { switch (video_supported) { case TPACPI_VIDEO_570: return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 0 : -EIO; case TPACPI_VIDEO_770: return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 0 : -EIO; case TPACPI_VIDEO_NEW: return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 0 : -EIO; default: return -ENOSYS; } /* not reached */ } static int video_read(struct seq_file *m) { int status, autosw; if (video_supported == TPACPI_VIDEO_NONE) { seq_printf(m, "status:\t\tnot supported\n"); return 0; } /* Even reads can crash X.org, so... */ if (!capable(CAP_SYS_ADMIN)) return -EPERM; status = video_outputsw_get(); if (status < 0) return status; autosw = video_autosw_get(); if (autosw < 0) return autosw; seq_printf(m, "status:\t\tsupported\n"); seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); if (video_supported == TPACPI_VIDEO_NEW) seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); if (video_supported == TPACPI_VIDEO_NEW) seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); seq_printf(m, "commands:\tauto_enable, auto_disable\n"); seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); return 0; } static int video_write(char *buf) { char *cmd; int enable, disable, status; int res; if (video_supported == TPACPI_VIDEO_NONE) return -ENODEV; /* Even reads can crash X.org, let alone writes... */ if (!capable(CAP_SYS_ADMIN)) return -EPERM; enable = 0; disable = 0; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "lcd_enable") == 0) { enable |= TP_ACPI_VIDEO_S_LCD; } else if (strlencmp(cmd, "lcd_disable") == 0) { disable |= TP_ACPI_VIDEO_S_LCD; } else if (strlencmp(cmd, "crt_enable") == 0) { enable |= TP_ACPI_VIDEO_S_CRT; } else if (strlencmp(cmd, "crt_disable") == 0) { disable |= TP_ACPI_VIDEO_S_CRT; } else if (video_supported == TPACPI_VIDEO_NEW && strlencmp(cmd, "dvi_enable") == 0) { enable |= TP_ACPI_VIDEO_S_DVI; } else if (video_supported == TPACPI_VIDEO_NEW && strlencmp(cmd, "dvi_disable") == 0) { disable |= TP_ACPI_VIDEO_S_DVI; } else if (strlencmp(cmd, "auto_enable") == 0) { res = video_autosw_set(1); if (res) return res; } else if (strlencmp(cmd, "auto_disable") == 0) { res = video_autosw_set(0); if (res) return res; } else if (strlencmp(cmd, "video_switch") == 0) { res = video_outputsw_cycle(); if (res) return res; } else if (strlencmp(cmd, "expand_toggle") == 0) { res = video_expand_toggle(); if (res) return res; } else return -EINVAL; } if (enable || disable) { status = video_outputsw_get(); if (status < 0) return status; res = video_outputsw_set((status & ~disable) | enable); if (res) return res; } return 0; } static struct ibm_struct video_driver_data = { .name = "video", .read = video_read, .write = video_write, .exit = video_exit, }; #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ /************************************************************************* * Keyboard backlight subdriver */ static enum led_brightness kbdlight_brightness; static DEFINE_MUTEX(kbdlight_mutex); static int kbdlight_set_level(int level) { int ret = 0; if (!hkey_handle) return -ENXIO; mutex_lock(&kbdlight_mutex); if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) ret = -EIO; else kbdlight_brightness = level; mutex_unlock(&kbdlight_mutex); return ret; } static int kbdlight_get_level(void) { int status = 0; if (!hkey_handle) return -ENXIO; if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) return -EIO; if (status < 0) return status; return status & 0x3; } static bool kbdlight_is_supported(void) { int status = 0; if (!hkey_handle) return false; if (!acpi_has_method(hkey_handle, "MLCG")) { vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); return false; } if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); return false; } if (status < 0) { vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); return false; } vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); /* * Guessed test for keyboard backlight: * * Machines with backlight keyboard return: * b010100000010000000XX - ThinkPad X1 Carbon 3rd * b110100010010000000XX - ThinkPad x230 * b010100000010000000XX - ThinkPad x240 * b010100000010000000XX - ThinkPad W541 * (XX is current backlight level) * * Machines without backlight keyboard return: * b10100001000000000000 - ThinkPad x230 * b10110001000000000000 - ThinkPad E430 * b00000000000000000000 - ThinkPad E450 * * Candidate BITs for detection test (XOR): * b01000000001000000000 * ^ */ return status & BIT(9); } static int kbdlight_sysfs_set(struct led_classdev *led_cdev, enum led_brightness brightness) { return kbdlight_set_level(brightness); } static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) { int level; level = kbdlight_get_level(); if (level < 0) return 0; return level; } static struct tpacpi_led_classdev tpacpi_led_kbdlight = { .led_classdev = { .name = "tpacpi::kbd_backlight", .max_brightness = 2, .flags = LED_BRIGHT_HW_CHANGED, .brightness_set_blocking = &kbdlight_sysfs_set, .brightness_get = &kbdlight_sysfs_get, } }; static int __init kbdlight_init(struct ibm_init_struct *iibm) { int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); TPACPI_ACPIHANDLE_INIT(hkey); if (!kbdlight_is_supported()) { tp_features.kbdlight = 0; vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); return 1; } kbdlight_brightness = kbdlight_sysfs_get(NULL); tp_features.kbdlight = 1; rc = led_classdev_register(&tpacpi_pdev->dev, &tpacpi_led_kbdlight.led_classdev); if (rc < 0) { tp_features.kbdlight = 0; return rc; } tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | TP_ACPI_HKEY_KBD_LIGHT_MASK); return 0; } static void kbdlight_exit(void) { if (tp_features.kbdlight) led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); } static int kbdlight_set_level_and_update(int level) { int ret; struct led_classdev *led_cdev; ret = kbdlight_set_level(level); led_cdev = &tpacpi_led_kbdlight.led_classdev; if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) led_cdev->brightness = level; return ret; } static int kbdlight_read(struct seq_file *m) { int level; if (!tp_features.kbdlight) { seq_printf(m, "status:\t\tnot supported\n"); } else { level = kbdlight_get_level(); if (level < 0) seq_printf(m, "status:\t\terror %d\n", level); else seq_printf(m, "status:\t\t%d\n", level); seq_printf(m, "commands:\t0, 1, 2\n"); } return 0; } static int kbdlight_write(char *buf) { char *cmd; int level = -1; if (!tp_features.kbdlight) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "0") == 0) level = 0; else if (strlencmp(cmd, "1") == 0) level = 1; else if (strlencmp(cmd, "2") == 0) level = 2; else return -EINVAL; } if (level == -1) return -EINVAL; return kbdlight_set_level_and_update(level); } static void kbdlight_suspend(void) { struct led_classdev *led_cdev; if (!tp_features.kbdlight) return; led_cdev = &tpacpi_led_kbdlight.led_classdev; led_update_brightness(led_cdev); led_classdev_suspend(led_cdev); } static void kbdlight_resume(void) { if (!tp_features.kbdlight) return; led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); } static struct ibm_struct kbdlight_driver_data = { .name = "kbdlight", .read = kbdlight_read, .write = kbdlight_write, .suspend = kbdlight_suspend, .resume = kbdlight_resume, .exit = kbdlight_exit, }; /************************************************************************* * Light (thinklight) subdriver */ TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ static int light_get_status(void) { int status = 0; if (tp_features.light_status) { if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) return -EIO; return (!!status); } return -ENXIO; } static int light_set_status(int status) { int rc; if (tp_features.light) { if (cmos_handle) { rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", (status) ? TP_CMOS_THINKLIGHT_ON : TP_CMOS_THINKLIGHT_OFF); } else { rc = acpi_evalf(lght_handle, NULL, NULL, "vd", (status) ? 1 : 0); } return (rc) ? 0 : -EIO; } return -ENXIO; } static int light_sysfs_set(struct led_classdev *led_cdev, enum led_brightness brightness) { return light_set_status((brightness != LED_OFF) ? TPACPI_LED_ON : TPACPI_LED_OFF); } static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) { return (light_get_status() == 1) ? LED_FULL : LED_OFF; } static struct tpacpi_led_classdev tpacpi_led_thinklight = { .led_classdev = { .name = "tpacpi::thinklight", .brightness_set_blocking = &light_sysfs_set, .brightness_get = &light_sysfs_get, } }; static int __init light_init(struct ibm_init_struct *iibm) { int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); if (tpacpi_is_ibm()) { TPACPI_ACPIHANDLE_INIT(ledb); TPACPI_ACPIHANDLE_INIT(lght); } TPACPI_ACPIHANDLE_INIT(cmos); /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; if (tp_features.light) /* light status not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ tp_features.light_status = acpi_evalf(ec_handle, NULL, "KBLT", "qv"); vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", str_supported(tp_features.light), str_supported(tp_features.light_status)); if (!tp_features.light) return 1; rc = led_classdev_register(&tpacpi_pdev->dev, &tpacpi_led_thinklight.led_classdev); if (rc < 0) { tp_features.light = 0; tp_features.light_status = 0; } else { rc = 0; } return rc; } static void light_exit(void) { led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); } static int light_read(struct seq_file *m) { int status; if (!tp_features.light) { seq_printf(m, "status:\t\tnot supported\n"); } else if (!tp_features.light_status) { seq_printf(m, "status:\t\tunknown\n"); seq_printf(m, "commands:\ton, off\n"); } else { status = light_get_status(); if (status < 0) return status; seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); seq_printf(m, "commands:\ton, off\n"); } return 0; } static int light_write(char *buf) { char *cmd; int newstatus = 0; if (!tp_features.light) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "on") == 0) { newstatus = 1; } else if (strlencmp(cmd, "off") == 0) { newstatus = 0; } else return -EINVAL; } return light_set_status(newstatus); } static struct ibm_struct light_driver_data = { .name = "light", .read = light_read, .write = light_write, .exit = light_exit, }; /************************************************************************* * CMOS subdriver */ /* sysfs cmos_command -------------------------------------------------- */ static ssize_t cmos_command_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long cmos_cmd; int res; if (parse_strtoul(buf, 21, &cmos_cmd)) return -EINVAL; res = issue_thinkpad_cmos_command(cmos_cmd); return (res) ? res : count; } static DEVICE_ATTR_WO(cmos_command); /* --------------------------------------------------------------------- */ static int __init cmos_init(struct ibm_init_struct *iibm) { int res; vdbg_printk(TPACPI_DBG_INIT, "initializing cmos commands subdriver\n"); TPACPI_ACPIHANDLE_INIT(cmos); vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", str_supported(cmos_handle != NULL)); res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); if (res) return res; return (cmos_handle) ? 0 : 1; } static void cmos_exit(void) { device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); } static int cmos_read(struct seq_file *m) { /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, R30, R31, T20-22, X20-21 */ if (!cmos_handle) seq_printf(m, "status:\t\tnot supported\n"); else { seq_printf(m, "status:\t\tsupported\n"); seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); } return 0; } static int cmos_write(char *buf) { char *cmd; int cmos_cmd, res; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "%u", &cmos_cmd) == 1 && cmos_cmd >= 0 && cmos_cmd <= 21) { /* cmos_cmd set */ } else return -EINVAL; res = issue_thinkpad_cmos_command(cmos_cmd); if (res) return res; } return 0; } static struct ibm_struct cmos_driver_data = { .name = "cmos", .read = cmos_read, .write = cmos_write, .exit = cmos_exit, }; /************************************************************************* * LED subdriver */ enum led_access_mode { TPACPI_LED_NONE = 0, TPACPI_LED_570, /* 570 */ TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ TPACPI_LED_NEW, /* all others */ }; enum { /* For TPACPI_LED_OLD */ TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ }; static enum led_access_mode led_supported; static acpi_handle led_handle; #define TPACPI_LED_NUMLEDS 16 static struct tpacpi_led_classdev *tpacpi_leds; static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { /* there's a limit of 19 chars + NULL before 2.6.26 */ "tpacpi::power", "tpacpi:orange:batt", "tpacpi:green:batt", "tpacpi::dock_active", "tpacpi::bay_active", "tpacpi::dock_batt", "tpacpi::unknown_led", "tpacpi::standby", "tpacpi::dock_status1", "tpacpi::dock_status2", "tpacpi::unknown_led2", "tpacpi::unknown_led3", "tpacpi::thinkvantage", }; #define TPACPI_SAFE_LEDS 0x1081U static inline bool tpacpi_is_led_restricted(const unsigned int led) { #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS return false; #else return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; #endif } static int led_get_status(const unsigned int led) { int status; enum led_status_t led_s; switch (led_supported) { case TPACPI_LED_570: if (!acpi_evalf(ec_handle, &status, "GLED", "dd", 1 << led)) return -EIO; led_s = (status == 0) ? TPACPI_LED_OFF : ((status == 1) ? TPACPI_LED_ON : TPACPI_LED_BLINK); tpacpi_led_state_cache[led] = led_s; return led_s; default: return -ENXIO; } /* not reached */ } static int led_set_status(const unsigned int led, const enum led_status_t ledstatus) { /* off, on, blink. Index is led_status_t */ static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; int rc = 0; switch (led_supported) { case TPACPI_LED_570: /* 570 */ if (unlikely(led > 7)) return -EINVAL; if (unlikely(tpacpi_is_led_restricted(led))) return -EPERM; if (!acpi_evalf(led_handle, NULL, NULL, "vdd", (1 << led), led_sled_arg1[ledstatus])) return -EIO; break; case TPACPI_LED_OLD: /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ if (unlikely(led > 7)) return -EINVAL; if (unlikely(tpacpi_is_led_restricted(led))) return -EPERM; rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); if (rc >= 0) rc = ec_write(TPACPI_LED_EC_HLBL, (ledstatus == TPACPI_LED_BLINK) << led); if (rc >= 0) rc = ec_write(TPACPI_LED_EC_HLCL, (ledstatus != TPACPI_LED_OFF) << led); break; case TPACPI_LED_NEW: /* all others */ if (unlikely(led >= TPACPI_LED_NUMLEDS)) return -EINVAL; if (unlikely(tpacpi_is_led_restricted(led))) return -EPERM; if (!acpi_evalf(led_handle, NULL, NULL, "vdd", led, led_led_arg1[ledstatus])) return -EIO; break; default: return -ENXIO; } if (!rc) tpacpi_led_state_cache[led] = ledstatus; return rc; } static int led_sysfs_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct tpacpi_led_classdev *data = container_of(led_cdev, struct tpacpi_led_classdev, led_classdev); enum led_status_t new_state; if (brightness == LED_OFF) new_state = TPACPI_LED_OFF; else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) new_state = TPACPI_LED_ON; else new_state = TPACPI_LED_BLINK; return led_set_status(data->led, new_state); } static int led_sysfs_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, unsigned long *delay_off) { struct tpacpi_led_classdev *data = container_of(led_cdev, struct tpacpi_led_classdev, led_classdev); /* Can we choose the flash rate? */ if (*delay_on == 0 && *delay_off == 0) { /* yes. set them to the hardware blink rate (1 Hz) */ *delay_on = 500; /* ms */ *delay_off = 500; /* ms */ } else if ((*delay_on != 500) || (*delay_off != 500)) return -EINVAL; return led_set_status(data->led, TPACPI_LED_BLINK); } static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) { int rc; struct tpacpi_led_classdev *data = container_of(led_cdev, struct tpacpi_led_classdev, led_classdev); rc = led_get_status(data->led); if (rc == TPACPI_LED_OFF || rc < 0) rc = LED_OFF; /* no error handling in led class :( */ else rc = LED_FULL; return rc; } static void led_exit(void) { unsigned int i; for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { if (tpacpi_leds[i].led_classdev.name) led_classdev_unregister(&tpacpi_leds[i].led_classdev); } kfree(tpacpi_leds); } static int __init tpacpi_init_led(unsigned int led) { int rc; tpacpi_leds[led].led = led; /* LEDs with no name don't get registered */ if (!tpacpi_led_names[led]) return 0; tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; if (led_supported == TPACPI_LED_570) tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; rc = led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); if (rc < 0) tpacpi_leds[led].led_classdev.name = NULL; return rc; } static const struct tpacpi_quirk led_useful_qtable[] __initconst = { TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ /* (1) - may have excess leds enabled on MSB */ /* Defaults (order matters, keep last, don't reorder!) */ { /* Lenovo */ .vendor = PCI_VENDOR_ID_LENOVO, .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, .quirks = 0x1fffU, }, { /* IBM ThinkPads with no EC version string */ .vendor = PCI_VENDOR_ID_IBM, .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, .quirks = 0x00ffU, }, { /* IBM ThinkPads with EC version string */ .vendor = PCI_VENDOR_ID_IBM, .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, .quirks = 0x00bfU, }, }; static enum led_access_mode __init led_init_detect_mode(void) { acpi_status status; if (tpacpi_is_ibm()) { /* 570 */ status = acpi_get_handle(ec_handle, "SLED", &led_handle); if (ACPI_SUCCESS(status)) return TPACPI_LED_570; /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ status = acpi_get_handle(ec_handle, "SYSL", &led_handle); if (ACPI_SUCCESS(status)) return TPACPI_LED_OLD; } /* most others */ status = acpi_get_handle(ec_handle, "LED", &led_handle); if (ACPI_SUCCESS(status)) return TPACPI_LED_NEW; /* R30, R31, and unknown firmwares */ led_handle = NULL; return TPACPI_LED_NONE; } static int __init led_init(struct ibm_init_struct *iibm) { unsigned int i; int rc; unsigned long useful_leds; vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); led_supported = led_init_detect_mode(); if (led_supported != TPACPI_LED_NONE) { useful_leds = tpacpi_check_quirks(led_useful_qtable, ARRAY_SIZE(led_useful_qtable)); if (!useful_leds) { led_handle = NULL; led_supported = TPACPI_LED_NONE; } } vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", str_supported(led_supported), led_supported); if (led_supported == TPACPI_LED_NONE) return 1; tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), GFP_KERNEL); if (!tpacpi_leds) { pr_err("Out of memory for LED data\n"); return -ENOMEM; } for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { tpacpi_leds[i].led = -1; if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { rc = tpacpi_init_led(i); if (rc < 0) { led_exit(); return rc; } } } #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); #endif return 0; } #define str_led_status(s) \ ((s) == TPACPI_LED_OFF ? "off" : \ ((s) == TPACPI_LED_ON ? "on" : "blinking")) static int led_read(struct seq_file *m) { if (!led_supported) { seq_printf(m, "status:\t\tnot supported\n"); return 0; } seq_printf(m, "status:\t\tsupported\n"); if (led_supported == TPACPI_LED_570) { /* 570 */ int i, status; for (i = 0; i < 8; i++) { status = led_get_status(i); if (status < 0) return -EIO; seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status)); } } seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); return 0; } static int led_write(char *buf) { char *cmd; int led, rc; enum led_status_t s; if (!led_supported) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "%d", &led) != 1) return -EINVAL; if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) || tpacpi_leds[led].led < 0) return -ENODEV; if (strstr(cmd, "off")) { s = TPACPI_LED_OFF; } else if (strstr(cmd, "on")) { s = TPACPI_LED_ON; } else if (strstr(cmd, "blink")) { s = TPACPI_LED_BLINK; } else { return -EINVAL; } rc = led_set_status(led, s); if (rc < 0) return rc; } return 0; } static struct ibm_struct led_driver_data = { .name = "led", .read = led_read, .write = led_write, .exit = led_exit, }; /************************************************************************* * Beep subdriver */ TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ #define TPACPI_BEEP_Q1 0x0001 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ }; static int __init beep_init(struct ibm_init_struct *iibm) { unsigned long quirks; vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); TPACPI_ACPIHANDLE_INIT(beep); vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", str_supported(beep_handle != NULL)); quirks = tpacpi_check_quirks(beep_quirk_table, ARRAY_SIZE(beep_quirk_table)); tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); return (beep_handle) ? 0 : 1; } static int beep_read(struct seq_file *m) { if (!beep_handle) seq_printf(m, "status:\t\tnot supported\n"); else { seq_printf(m, "status:\t\tsupported\n"); seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); } return 0; } static int beep_write(char *buf) { char *cmd; int beep_cmd; if (!beep_handle) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "%u", &beep_cmd) == 1 && beep_cmd >= 0 && beep_cmd <= 17) { /* beep_cmd set */ } else return -EINVAL; if (tp_features.beep_needs_two_args) { if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) return -EIO; } else { if (!acpi_evalf(beep_handle, NULL, NULL, "vd", beep_cmd)) return -EIO; } } return 0; } static struct ibm_struct beep_driver_data = { .name = "beep", .read = beep_read, .write = beep_write, }; /************************************************************************* * Thermal subdriver */ enum thermal_access_mode { TPACPI_THERMAL_NONE = 0, /* No thermal support */ TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ }; enum { /* TPACPI_THERMAL_TPEC_* */ TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ }; #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ struct ibm_thermal_sensors_struct { s32 temp[TPACPI_MAX_THERMAL_SENSORS]; }; static enum thermal_access_mode thermal_read_mode; /* idx is zero-based */ static int thermal_get_sensor(int idx, s32 *value) { int t; s8 tmp; char tmpi[5]; t = TP_EC_THERMAL_TMP0; switch (thermal_read_mode) { #if TPACPI_MAX_THERMAL_SENSORS >= 16 case TPACPI_THERMAL_TPEC_16: if (idx >= 8 && idx <= 15) { t = TP_EC_THERMAL_TMP8; idx -= 8; } #endif /* fallthrough */ case TPACPI_THERMAL_TPEC_8: if (idx <= 7) { if (!acpi_ec_read(t + idx, &tmp)) return -EIO; *value = tmp * 1000; return 0; } break; case TPACPI_THERMAL_ACPI_UPDT: if (idx <= 7) { snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) return -EIO; if (!acpi_evalf(ec_handle, &t, tmpi, "d")) return -EIO; *value = (t - 2732) * 100; return 0; } break; case TPACPI_THERMAL_ACPI_TMP07: if (idx <= 7) { snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); if (!acpi_evalf(ec_handle, &t, tmpi, "d")) return -EIO; if (t > 127 || t < -127) t = TP_EC_THERMAL_TMP_NA; *value = t * 1000; return 0; } break; case TPACPI_THERMAL_NONE: default: return -ENOSYS; } return -EINVAL; } static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) { int res, i; int n; n = 8; i = 0; if (!s) return -EINVAL; if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) n = 16; for (i = 0 ; i < n; i++) { res = thermal_get_sensor(i, &s->temp[i]); if (res) return res; } return n; } static void thermal_dump_all_sensors(void) { int n, i; struct ibm_thermal_sensors_struct t; n = thermal_get_sensors(&t); if (n <= 0) return; pr_notice("temperatures (Celsius):"); for (i = 0; i < n; i++) { if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) pr_cont(" %d", (int)(t.temp[i] / 1000)); else pr_cont(" N/A"); } pr_cont("\n"); } /* sysfs temp##_input -------------------------------------------------- */ static ssize_t thermal_temp_input_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); int idx = sensor_attr->index; s32 value; int res; res = thermal_get_sensor(idx, &value); if (res) return res; if (value == TPACPI_THERMAL_SENSOR_NA) return -ENXIO; return snprintf(buf, PAGE_SIZE, "%d\n", value); } #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ thermal_temp_input_show, NULL, _idxB) static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { THERMAL_SENSOR_ATTR_TEMP(1, 0), THERMAL_SENSOR_ATTR_TEMP(2, 1), THERMAL_SENSOR_ATTR_TEMP(3, 2), THERMAL_SENSOR_ATTR_TEMP(4, 3), THERMAL_SENSOR_ATTR_TEMP(5, 4), THERMAL_SENSOR_ATTR_TEMP(6, 5), THERMAL_SENSOR_ATTR_TEMP(7, 6), THERMAL_SENSOR_ATTR_TEMP(8, 7), THERMAL_SENSOR_ATTR_TEMP(9, 8), THERMAL_SENSOR_ATTR_TEMP(10, 9), THERMAL_SENSOR_ATTR_TEMP(11, 10), THERMAL_SENSOR_ATTR_TEMP(12, 11), THERMAL_SENSOR_ATTR_TEMP(13, 12), THERMAL_SENSOR_ATTR_TEMP(14, 13), THERMAL_SENSOR_ATTR_TEMP(15, 14), THERMAL_SENSOR_ATTR_TEMP(16, 15), }; #define THERMAL_ATTRS(X) \ &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr static struct attribute *thermal_temp_input_attr[] = { THERMAL_ATTRS(8), THERMAL_ATTRS(9), THERMAL_ATTRS(10), THERMAL_ATTRS(11), THERMAL_ATTRS(12), THERMAL_ATTRS(13), THERMAL_ATTRS(14), THERMAL_ATTRS(15), THERMAL_ATTRS(0), THERMAL_ATTRS(1), THERMAL_ATTRS(2), THERMAL_ATTRS(3), THERMAL_ATTRS(4), THERMAL_ATTRS(5), THERMAL_ATTRS(6), THERMAL_ATTRS(7), NULL }; static const struct attribute_group thermal_temp_input16_group = { .attrs = thermal_temp_input_attr }; static const struct attribute_group thermal_temp_input8_group = { .attrs = &thermal_temp_input_attr[8] }; #undef THERMAL_SENSOR_ATTR_TEMP #undef THERMAL_ATTRS /* --------------------------------------------------------------------- */ static int __init thermal_init(struct ibm_init_struct *iibm) { u8 t, ta1, ta2; int i; int acpi_tmp7; int res; vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); if (thinkpad_id.ec_model) { /* * Direct EC access mode: sensors at registers * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for * non-implemented, thermal sensors return 0x80 when * not available */ ta1 = ta2 = 0; for (i = 0; i < 8; i++) { if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { ta1 |= t; } else { ta1 = 0; break; } if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { ta2 |= t; } else { ta1 = 0; break; } } if (ta1 == 0) { /* This is sheer paranoia, but we handle it anyway */ if (acpi_tmp7) { pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; } else { pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); thermal_read_mode = TPACPI_THERMAL_NONE; } } else { thermal_read_mode = (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; } } else if (acpi_tmp7) { if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { /* 600e/x, 770e, 770x */ thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; } else { /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; } } else { /* temperatures not supported on 570, G4x, R30, R31, R32 */ thermal_read_mode = TPACPI_THERMAL_NONE; } vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), thermal_read_mode); switch (thermal_read_mode) { case TPACPI_THERMAL_TPEC_16: res = sysfs_create_group(&tpacpi_hwmon->kobj, &thermal_temp_input16_group); if (res) return res; break; case TPACPI_THERMAL_TPEC_8: case TPACPI_THERMAL_ACPI_TMP07: case TPACPI_THERMAL_ACPI_UPDT: res = sysfs_create_group(&tpacpi_hwmon->kobj, &thermal_temp_input8_group); if (res) return res; break; case TPACPI_THERMAL_NONE: default: return 1; } return 0; } static void thermal_exit(void) { switch (thermal_read_mode) { case TPACPI_THERMAL_TPEC_16: sysfs_remove_group(&tpacpi_hwmon->kobj, &thermal_temp_input16_group); break; case TPACPI_THERMAL_TPEC_8: case TPACPI_THERMAL_ACPI_TMP07: case TPACPI_THERMAL_ACPI_UPDT: sysfs_remove_group(&tpacpi_hwmon->kobj, &thermal_temp_input8_group); break; case TPACPI_THERMAL_NONE: default: break; } } static int thermal_read(struct seq_file *m) { int n, i; struct ibm_thermal_sensors_struct t; n = thermal_get_sensors(&t); if (unlikely(n < 0)) return n; seq_printf(m, "temperatures:\t"); if (n > 0) { for (i = 0; i < (n - 1); i++) seq_printf(m, "%d ", t.temp[i] / 1000); seq_printf(m, "%d\n", t.temp[i] / 1000); } else seq_printf(m, "not supported\n"); return 0; } static struct ibm_struct thermal_driver_data = { .name = "thermal", .read = thermal_read, .exit = thermal_exit, }; /************************************************************************* * Backlight/brightness subdriver */ #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" /* * ThinkPads can read brightness from two places: EC HBRV (0x31), or * CMOS NVRAM byte 0x5E, bits 0-3. * * EC HBRV (0x31) has the following layout * Bit 7: unknown function * Bit 6: unknown function * Bit 5: Z: honour scale changes, NZ: ignore scale changes * Bit 4: must be set to zero to avoid problems * Bit 3-0: backlight brightness level * * brightness_get_raw returns status data in the HBRV layout * * WARNING: The X61 has been verified to use HBRV for something else, so * this should be used _only_ on IBM ThinkPads, and maybe with some careful * testing on the very early *60 Lenovo models... */ enum { TP_EC_BACKLIGHT = 0x31, /* TP_EC_BACKLIGHT bitmasks */ TP_EC_BACKLIGHT_LVLMSK = 0x1F, TP_EC_BACKLIGHT_CMDMSK = 0xE0, TP_EC_BACKLIGHT_MAPSW = 0x20, }; enum tpacpi_brightness_access_mode { TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ TPACPI_BRGHT_MODE_EC, /* EC control */ TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ TPACPI_BRGHT_MODE_MAX }; static struct backlight_device *ibm_backlight_device; static enum tpacpi_brightness_access_mode brightness_mode = TPACPI_BRGHT_MODE_MAX; static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ static struct mutex brightness_mutex; /* NVRAM brightness access, * call with brightness_mutex held! */ static unsigned int tpacpi_brightness_nvram_get(void) { u8 lnvram; lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; lnvram &= bright_maxlvl; return lnvram; } static void tpacpi_brightness_checkpoint_nvram(void) { u8 lec = 0; u8 b_nvram; if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) return; vdbg_printk(TPACPI_DBG_BRGHT, "trying to checkpoint backlight level to NVRAM...\n"); if (mutex_lock_killable(&brightness_mutex) < 0) return; if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) goto unlock; lec &= TP_EC_BACKLIGHT_LVLMSK; b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { /* NVRAM needs update */ b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << TP_NVRAM_POS_LEVEL_BRIGHTNESS); b_nvram |= lec; nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); dbg_printk(TPACPI_DBG_BRGHT, "updated NVRAM backlight level to %u (0x%02x)\n", (unsigned int) lec, (unsigned int) b_nvram); } else vdbg_printk(TPACPI_DBG_BRGHT, "NVRAM backlight level already is %u (0x%02x)\n", (unsigned int) lec, (unsigned int) b_nvram); unlock: mutex_unlock(&brightness_mutex); } /* call with brightness_mutex held! */ static int tpacpi_brightness_get_raw(int *status) { u8 lec = 0; switch (brightness_mode) { case TPACPI_BRGHT_MODE_UCMS_STEP: *status = tpacpi_brightness_nvram_get(); return 0; case TPACPI_BRGHT_MODE_EC: case TPACPI_BRGHT_MODE_ECNVRAM: if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) return -EIO; *status = lec; return 0; default: return -ENXIO; } } /* call with brightness_mutex held! */ /* do NOT call with illegal backlight level value */ static int tpacpi_brightness_set_ec(unsigned int value) { u8 lec = 0; if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) return -EIO; if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, (lec & TP_EC_BACKLIGHT_CMDMSK) | (value & TP_EC_BACKLIGHT_LVLMSK)))) return -EIO; return 0; } /* call with brightness_mutex held! */ static int tpacpi_brightness_set_ucmsstep(unsigned int value) { int cmos_cmd, inc; unsigned int current_value, i; current_value = tpacpi_brightness_nvram_get(); if (value == current_value) return 0; cmos_cmd = (value > current_value) ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN; inc = (value > current_value) ? 1 : -1; for (i = current_value; i != value; i += inc) if (issue_thinkpad_cmos_command(cmos_cmd)) return -EIO; return 0; } /* May return EINTR which can always be mapped to ERESTARTSYS */ static int brightness_set(unsigned int value) { int res; if (value > bright_maxlvl) return -EINVAL; vdbg_printk(TPACPI_DBG_BRGHT, "set backlight level to %d\n", value); res = mutex_lock_killable(&brightness_mutex); if (res < 0) return res; switch (brightness_mode) { case TPACPI_BRGHT_MODE_EC: case TPACPI_BRGHT_MODE_ECNVRAM: res = tpacpi_brightness_set_ec(value); break; case TPACPI_BRGHT_MODE_UCMS_STEP: res = tpacpi_brightness_set_ucmsstep(value); break; default: res = -ENXIO; } mutex_unlock(&brightness_mutex); return res; } /* sysfs backlight class ----------------------------------------------- */ static int brightness_update_status(struct backlight_device *bd) { unsigned int level = (bd->props.fb_blank == FB_BLANK_UNBLANK && bd->props.power == FB_BLANK_UNBLANK) ? bd->props.brightness : 0; dbg_printk(TPACPI_DBG_BRGHT, "backlight: attempt to set level to %d\n", level); /* it is the backlight class's job (caller) to handle * EINTR and other errors properly */ return brightness_set(level); } static int brightness_get(struct backlight_device *bd) { int status, res; res = mutex_lock_killable(&brightness_mutex); if (res < 0) return 0; res = tpacpi_brightness_get_raw(&status); mutex_unlock(&brightness_mutex); if (res < 0) return 0; return status & TP_EC_BACKLIGHT_LVLMSK; } static void tpacpi_brightness_notify_change(void) { backlight_force_update(ibm_backlight_device, BACKLIGHT_UPDATE_HOTKEY); } static const struct backlight_ops ibm_backlight_data = { .get_brightness = brightness_get, .update_status = brightness_update_status, }; /* --------------------------------------------------------------------- */ /* * Call _BCL method of video device. On some ThinkPads this will * switch the firmware to the ACPI brightness control mode. */ static int __init tpacpi_query_bcl_levels(acpi_handle handle) { struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; struct acpi_device *device, *child; int rc; if (acpi_bus_get_device(handle, &device)) return 0; rc = 0; list_for_each_entry(child, &device->children, node) { acpi_status status = acpi_evaluate_object(child->handle, "_BCL", NULL, &buffer); if (ACPI_FAILURE(status)) continue; obj = (union acpi_object *)buffer.pointer; if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { pr_err("Unknown _BCL data, please report this to %s\n", TPACPI_MAIL); rc = 0; } else { rc = obj->package.count; } break; } kfree(buffer.pointer); return rc; } /* * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map */ static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) { acpi_handle video_device; int bcl_levels = 0; tpacpi_acpi_handle_locate("video", NULL, &video_device); if (video_device) bcl_levels = tpacpi_query_bcl_levels(video_device); tp_features.bright_acpimode = (bcl_levels > 0); return (bcl_levels > 2) ? (bcl_levels - 2) : 0; } /* * These are only useful for models that have only one possibility * of GPU. If the BIOS model handles both ATI and Intel, don't use * these quirks. */ #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { /* Models with ATI GPUs known to require ECNVRAM mode */ TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ /* Models with ATI GPUs that can use ECNVRAM */ TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), /* Models with Intel Extreme Graphics 2 */ TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), /* Models with Intel GMA900 */ TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ }; /* * Returns < 0 for error, otherwise sets tp_features.bright_* * and bright_maxlvl. */ static void __init tpacpi_detect_brightness_capabilities(void) { unsigned int b; vdbg_printk(TPACPI_DBG_INIT, "detecting firmware brightness interface capabilities\n"); /* we could run a quirks check here (same table used by * brightness_init) if needed */ /* * We always attempt to detect acpi support, so as to switch * Lenovo Vista BIOS to ACPI brightness mode even if we are not * going to publish a backlight interface */ b = tpacpi_check_std_acpi_brightness_support(); switch (b) { case 16: bright_maxlvl = 15; break; case 8: case 0: bright_maxlvl = 7; break; default: tp_features.bright_unkfw = 1; bright_maxlvl = b - 1; } pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); } static int __init brightness_init(struct ibm_init_struct *iibm) { struct backlight_properties props; int b; unsigned long quirks; vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); mutex_init(&brightness_mutex); quirks = tpacpi_check_quirks(brightness_quirk_table, ARRAY_SIZE(brightness_quirk_table)); /* tpacpi_detect_brightness_capabilities() must have run already */ /* if it is unknown, we don't handle it: it wouldn't be safe */ if (tp_features.bright_unkfw) return 1; if (!brightness_enable) { dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, "brightness support disabled by module parameter\n"); return 1; } if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { if (brightness_enable > 1) { pr_info("Standard ACPI backlight interface available, not loading native one\n"); return 1; } else if (brightness_enable == 1) { pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); return 1; } } else if (tp_features.bright_acpimode && brightness_enable > 1) { pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n"); } /* * Check for module parameter bogosity, note that we * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be * able to detect "unspecified" */ if (brightness_mode > TPACPI_BRGHT_MODE_MAX) return -EINVAL; /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || brightness_mode == TPACPI_BRGHT_MODE_MAX) { if (quirks & TPACPI_BRGHT_Q_EC) brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; else brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; dbg_printk(TPACPI_DBG_BRGHT, "driver auto-selected brightness_mode=%d\n", brightness_mode); } /* Safety */ if (!tpacpi_is_ibm() && (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || brightness_mode == TPACPI_BRGHT_MODE_EC)) return -EINVAL; if (tpacpi_brightness_get_raw(&b) < 0) return 1; memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_PLATFORM; props.max_brightness = bright_maxlvl; props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL, &ibm_backlight_data, &props); if (IS_ERR(ibm_backlight_device)) { int rc = PTR_ERR(ibm_backlight_device); ibm_backlight_device = NULL; pr_err("Could not register backlight device\n"); return rc; } vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, "brightness is supported\n"); if (quirks & TPACPI_BRGHT_Q_ASK) { pr_notice("brightness: will use unverified default: brightness_mode=%d\n", brightness_mode); pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", TPACPI_MAIL); } /* Added by mistake in early 2007. Probably useless, but it could * be working around some unknown firmware problem where the value * read at startup doesn't match the real hardware state... so leave * it in place just in case */ backlight_update_status(ibm_backlight_device); vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, "brightness: registering brightness hotkeys as change notification\n"); tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | TP_ACPI_HKEY_BRGHTUP_MASK | TP_ACPI_HKEY_BRGHTDWN_MASK); return 0; } static void brightness_suspend(void) { tpacpi_brightness_checkpoint_nvram(); } static void brightness_shutdown(void) { tpacpi_brightness_checkpoint_nvram(); } static void brightness_exit(void) { if (ibm_backlight_device) { vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, "calling backlight_device_unregister()\n"); backlight_device_unregister(ibm_backlight_device); } tpacpi_brightness_checkpoint_nvram(); } static int brightness_read(struct seq_file *m) { int level; level = brightness_get(NULL); if (level < 0) { seq_printf(m, "level:\t\tunreadable\n"); } else { seq_printf(m, "level:\t\t%d\n", level); seq_printf(m, "commands:\tup, down\n"); seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", bright_maxlvl); } return 0; } static int brightness_write(char *buf) { int level; int rc; char *cmd; level = brightness_get(NULL); if (level < 0) return level; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "up") == 0) { if (level < bright_maxlvl) level++; } else if (strlencmp(cmd, "down") == 0) { if (level > 0) level--; } else if (sscanf(cmd, "level %d", &level) == 1 && level >= 0 && level <= bright_maxlvl) { /* new level set */ } else return -EINVAL; } tpacpi_disclose_usertask("procfs brightness", "set level to %d\n", level); /* * Now we know what the final level should be, so we try to set it. * Doing it this way makes the syscall restartable in case of EINTR */ rc = brightness_set(level); if (!rc && ibm_backlight_device) backlight_force_update(ibm_backlight_device, BACKLIGHT_UPDATE_SYSFS); return (rc == -EINTR) ? -ERESTARTSYS : rc; } static struct ibm_struct brightness_driver_data = { .name = "brightness", .read = brightness_read, .write = brightness_write, .exit = brightness_exit, .suspend = brightness_suspend, .shutdown = brightness_shutdown, }; /************************************************************************* * Volume subdriver */ /* * IBM ThinkPads have a simple volume controller with MUTE gating. * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. * * Since the *61 series (and probably also the later *60 series), Lenovo * ThinkPads only implement the MUTE gate. * * EC register 0x30 * Bit 6: MUTE (1 mutes sound) * Bit 3-0: Volume * Other bits should be zero as far as we know. * * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and * bits 3-0 (volume). Other bits in NVRAM may have other functions, * such as bit 7 which is used to detect repeated presses of MUTE, * and we leave them unchanged. * * On newer Lenovo ThinkPads, the EC can automatically change the volume * in response to user input. Unfortunately, this rarely works well. * The laptop changes the state of its internal MUTE gate and, on some * models, sends KEY_MUTE, causing any user code that responds to the * mute button to get confused. The hardware MUTE gate is also * unnecessary, since user code can handle the mute button without * kernel or EC help. * * To avoid confusing userspace, we simply disable all EC-based mute * and volume controls when possible. */ #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT #define TPACPI_ALSA_DRVNAME "ThinkPad EC" #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME #if SNDRV_CARDS <= 32 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) #else #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) #endif static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ static char *alsa_id = "ThinkPadEC"; static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; struct tpacpi_alsa_data { struct snd_card *card; struct snd_ctl_elem_id *ctl_mute_id; struct snd_ctl_elem_id *ctl_vol_id; }; static struct snd_card *alsa_card; enum { TP_EC_AUDIO = 0x30, /* TP_EC_AUDIO bits */ TP_EC_AUDIO_MUTESW = 6, /* TP_EC_AUDIO bitmasks */ TP_EC_AUDIO_LVL_MSK = 0x0F, TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), /* Maximum volume */ TP_EC_VOLUME_MAX = 14, }; enum tpacpi_volume_access_mode { TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ TPACPI_VOL_MODE_EC, /* Pure EC control */ TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ TPACPI_VOL_MODE_MAX }; enum tpacpi_volume_capabilities { TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ TPACPI_VOL_CAP_MAX }; enum tpacpi_mute_btn_mode { TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ /* We don't know what mode 1 is. */ TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ }; static enum tpacpi_volume_access_mode volume_mode = TPACPI_VOL_MODE_MAX; static enum tpacpi_volume_capabilities volume_capabilities; static bool volume_control_allowed; static bool software_mute_requested = true; static bool software_mute_active; static int software_mute_orig_mode; /* * Used to syncronize writers to TP_EC_AUDIO and * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write */ static struct mutex volume_mutex; static void tpacpi_volume_checkpoint_nvram(void) { u8 lec = 0; u8 b_nvram; u8 ec_mask; if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) return; if (!volume_control_allowed) return; if (software_mute_active) return; vdbg_printk(TPACPI_DBG_MIXER, "trying to checkpoint mixer state to NVRAM...\n"); if (tp_features.mixer_no_level_control) ec_mask = TP_EC_AUDIO_MUTESW_MSK; else ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; if (mutex_lock_killable(&volume_mutex) < 0) return; if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) goto unlock; lec &= ec_mask; b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); if (lec != (b_nvram & ec_mask)) { /* NVRAM needs update */ b_nvram &= ~ec_mask; b_nvram |= lec; nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); dbg_printk(TPACPI_DBG_MIXER, "updated NVRAM mixer status to 0x%02x (0x%02x)\n", (unsigned int) lec, (unsigned int) b_nvram); } else { vdbg_printk(TPACPI_DBG_MIXER, "NVRAM mixer status already is 0x%02x (0x%02x)\n", (unsigned int) lec, (unsigned int) b_nvram); } unlock: mutex_unlock(&volume_mutex); } static int volume_get_status_ec(u8 *status) { u8 s; if (!acpi_ec_read(TP_EC_AUDIO, &s)) return -EIO; *status = s; dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); return 0; } static int volume_get_status(u8 *status) { return volume_get_status_ec(status); } static int volume_set_status_ec(const u8 status) { if (!acpi_ec_write(TP_EC_AUDIO, status)) return -EIO; dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); /* * On X200s, and possibly on others, it can take a while for * reads to become correct. */ msleep(1); return 0; } static int volume_set_status(const u8 status) { return volume_set_status_ec(status); } /* returns < 0 on error, 0 on no change, 1 on change */ static int __volume_set_mute_ec(const bool mute) { int rc; u8 s, n; if (mutex_lock_killable(&volume_mutex) < 0) return -EINTR; rc = volume_get_status_ec(&s); if (rc) goto unlock; n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : s & ~TP_EC_AUDIO_MUTESW_MSK; if (n != s) { rc = volume_set_status_ec(n); if (!rc) rc = 1; } unlock: mutex_unlock(&volume_mutex); return rc; } static int volume_alsa_set_mute(const bool mute) { dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", (mute) ? "" : "un"); return __volume_set_mute_ec(mute); } static int volume_set_mute(const bool mute) { int rc; dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", (mute) ? "" : "un"); rc = __volume_set_mute_ec(mute); return (rc < 0) ? rc : 0; } /* returns < 0 on error, 0 on no change, 1 on change */ static int __volume_set_volume_ec(const u8 vol) { int rc; u8 s, n; if (vol > TP_EC_VOLUME_MAX) return -EINVAL; if (mutex_lock_killable(&volume_mutex) < 0) return -EINTR; rc = volume_get_status_ec(&s); if (rc) goto unlock; n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; if (n != s) { rc = volume_set_status_ec(n); if (!rc) rc = 1; } unlock: mutex_unlock(&volume_mutex); return rc; } static int volume_set_software_mute(bool startup) { int result; if (!tpacpi_is_lenovo()) return -ENODEV; if (startup) { if (!acpi_evalf(ec_handle, &software_mute_orig_mode, "HAUM", "qd")) return -EIO; dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, "Initial HAUM setting was %d\n", software_mute_orig_mode); } if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", (int)TP_EC_MUTE_BTN_NONE)) return -EIO; if (result != TP_EC_MUTE_BTN_NONE) pr_warn("Unexpected SAUM result %d\n", result); /* * In software mute mode, the standard codec controls take * precendence, so we unmute the ThinkPad HW switch at * startup. Just on case there are SAUM-capable ThinkPads * with level controls, set max HW volume as well. */ if (tp_features.mixer_no_level_control) result = volume_set_mute(false); else result = volume_set_status(TP_EC_VOLUME_MAX); if (result != 0) pr_warn("Failed to unmute the HW mute switch\n"); return 0; } static void volume_exit_software_mute(void) { int r; if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) || r != software_mute_orig_mode) pr_warn("Failed to restore mute mode\n"); } static int volume_alsa_set_volume(const u8 vol) { dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to set volume level to %hu\n", vol); return __volume_set_volume_ec(vol); } static void volume_alsa_notify_change(void) { struct tpacpi_alsa_data *d; if (alsa_card && alsa_card->private_data) { d = alsa_card->private_data; if (d->ctl_mute_id) snd_ctl_notify(alsa_card, SNDRV_CTL_EVENT_MASK_VALUE, d->ctl_mute_id); if (d->ctl_vol_id) snd_ctl_notify(alsa_card, SNDRV_CTL_EVENT_MASK_VALUE, d->ctl_vol_id); } } static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = TP_EC_VOLUME_MAX; return 0; } static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { u8 s; int rc; rc = volume_get_status(&s); if (rc < 0) return rc; ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; return 0; } static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", ucontrol->value.integer.value[0]); return volume_alsa_set_volume(ucontrol->value.integer.value[0]); } #define volume_alsa_mute_info snd_ctl_boolean_mono_info static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { u8 s; int rc; rc = volume_get_status(&s); if (rc < 0) return rc; ucontrol->value.integer.value[0] = (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; return 0; } static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { tpacpi_disclose_usertask("ALSA", "%smute\n", ucontrol->value.integer.value[0] ? "un" : ""); return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); } static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Console Playback Volume", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READ, .info = volume_alsa_vol_info, .get = volume_alsa_vol_get, }; static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Console Playback Switch", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READ, .info = volume_alsa_mute_info, .get = volume_alsa_mute_get, }; static void volume_suspend(void) { tpacpi_volume_checkpoint_nvram(); } static void volume_resume(void) { if (software_mute_active) { if (volume_set_software_mute(false) < 0) pr_warn("Failed to restore software mute\n"); } else { volume_alsa_notify_change(); } } static void volume_shutdown(void) { tpacpi_volume_checkpoint_nvram(); } static void volume_exit(void) { if (alsa_card) { snd_card_free(alsa_card); alsa_card = NULL; } tpacpi_volume_checkpoint_nvram(); if (software_mute_active) volume_exit_software_mute(); } static int __init volume_create_alsa_mixer(void) { struct snd_card *card; struct tpacpi_alsa_data *data; struct snd_kcontrol *ctl_vol; struct snd_kcontrol *ctl_mute; int rc; rc = snd_card_new(&tpacpi_pdev->dev, alsa_index, alsa_id, THIS_MODULE, sizeof(struct tpacpi_alsa_data), &card); if (rc < 0 || !card) { pr_err("Failed to create ALSA card structures: %d\n", rc); return 1; } BUG_ON(!card->private_data); data = card->private_data; data->card = card; strlcpy(card->driver, TPACPI_ALSA_DRVNAME, sizeof(card->driver)); strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, sizeof(card->shortname)); snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", (thinkpad_id.ec_version_str) ? thinkpad_id.ec_version_str : "(unknown)"); snprintf(card->longname, sizeof(card->longname), "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, (thinkpad_id.ec_version_str) ? thinkpad_id.ec_version_str : "unknown"); if (volume_control_allowed) { volume_alsa_control_vol.put = volume_alsa_vol_put; volume_alsa_control_vol.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; volume_alsa_control_mute.put = volume_alsa_mute_put; volume_alsa_control_mute.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; } if (!tp_features.mixer_no_level_control) { ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); rc = snd_ctl_add(card, ctl_vol); if (rc < 0) { pr_err("Failed to create ALSA volume control: %d\n", rc); goto err_exit; } data->ctl_vol_id = &ctl_vol->id; } ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); rc = snd_ctl_add(card, ctl_mute); if (rc < 0) { pr_err("Failed to create ALSA mute control: %d\n", rc); goto err_exit; } data->ctl_mute_id = &ctl_mute->id; rc = snd_card_register(card); if (rc < 0) { pr_err("Failed to register ALSA card: %d\n", rc); goto err_exit; } alsa_card = card; return 0; err_exit: snd_card_free(card); return 1; } #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ static const struct tpacpi_quirk volume_quirk_table[] __initconst = { /* Whitelist volume level on all IBM by default */ { .vendor = PCI_VENDOR_ID_IBM, .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, .quirks = TPACPI_VOL_Q_LEVEL }, /* Lenovo models with volume control (needs confirmation) */ TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ /* Whitelist mute-only on all Lenovo by default */ { .vendor = PCI_VENDOR_ID_LENOVO, .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, .quirks = TPACPI_VOL_Q_MUTEONLY } }; static int __init volume_init(struct ibm_init_struct *iibm) { unsigned long quirks; int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); mutex_init(&volume_mutex); /* * Check for module parameter bogosity, note that we * init volume_mode to TPACPI_VOL_MODE_MAX in order to be * able to detect "unspecified" */ if (volume_mode > TPACPI_VOL_MODE_MAX) return -EINVAL; if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { pr_err("UCMS step volume mode not implemented, please contact %s\n", TPACPI_MAIL); return 1; } if (volume_capabilities >= TPACPI_VOL_CAP_MAX) return -EINVAL; /* * The ALSA mixer is our primary interface. * When disabled, don't install the subdriver at all */ if (!alsa_enable) { vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); return 1; } quirks = tpacpi_check_quirks(volume_quirk_table, ARRAY_SIZE(volume_quirk_table)); switch (volume_capabilities) { case TPACPI_VOL_CAP_AUTO: if (quirks & TPACPI_VOL_Q_MUTEONLY) tp_features.mixer_no_level_control = 1; else if (quirks & TPACPI_VOL_Q_LEVEL) tp_features.mixer_no_level_control = 0; else return 1; /* no mixer */ break; case TPACPI_VOL_CAP_VOLMUTE: tp_features.mixer_no_level_control = 0; break; case TPACPI_VOL_CAP_MUTEONLY: tp_features.mixer_no_level_control = 1; break; default: return 1; } if (volume_capabilities != TPACPI_VOL_CAP_AUTO) dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, "using user-supplied volume_capabilities=%d\n", volume_capabilities); if (volume_mode == TPACPI_VOL_MODE_AUTO || volume_mode == TPACPI_VOL_MODE_MAX) { volume_mode = TPACPI_VOL_MODE_ECNVRAM; dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, "driver auto-selected volume_mode=%d\n", volume_mode); } else { dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, "using user-supplied volume_mode=%d\n", volume_mode); } vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, "mute is supported, volume control is %s\n", str_supported(!tp_features.mixer_no_level_control)); if (software_mute_requested && volume_set_software_mute(true) == 0) { software_mute_active = true; } else { rc = volume_create_alsa_mixer(); if (rc) { pr_err("Could not create the ALSA mixer interface\n"); return rc; } pr_info("Console audio control enabled, mode: %s\n", (volume_control_allowed) ? "override (read/write)" : "monitor (read only)"); } vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, "registering volume hotkeys as change notification\n"); tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | TP_ACPI_HKEY_VOLUP_MASK | TP_ACPI_HKEY_VOLDWN_MASK | TP_ACPI_HKEY_MUTE_MASK); return 0; } static int volume_read(struct seq_file *m) { u8 status; if (volume_get_status(&status) < 0) { seq_printf(m, "level:\t\tunreadable\n"); } else { if (tp_features.mixer_no_level_control) seq_printf(m, "level:\t\tunsupported\n"); else seq_printf(m, "level:\t\t%d\n", status & TP_EC_AUDIO_LVL_MSK); seq_printf(m, "mute:\t\t%s\n", onoff(status, TP_EC_AUDIO_MUTESW)); if (volume_control_allowed) { seq_printf(m, "commands:\tunmute, mute\n"); if (!tp_features.mixer_no_level_control) { seq_printf(m, "commands:\tup, down\n"); seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", TP_EC_VOLUME_MAX); } } } return 0; } static int volume_write(char *buf) { u8 s; u8 new_level, new_mute; int l; char *cmd; int rc; /* * We do allow volume control at driver startup, so that the * user can set initial state through the volume=... parameter hack. */ if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { if (unlikely(!tp_warned.volume_ctrl_forbidden)) { tp_warned.volume_ctrl_forbidden = 1; pr_notice("Console audio control in monitor mode, changes are not allowed\n"); pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); } return -EPERM; } rc = volume_get_status(&s); if (rc < 0) return rc; new_level = s & TP_EC_AUDIO_LVL_MSK; new_mute = s & TP_EC_AUDIO_MUTESW_MSK; while ((cmd = next_cmd(&buf))) { if (!tp_features.mixer_no_level_control) { if (strlencmp(cmd, "up") == 0) { if (new_mute) new_mute = 0; else if (new_level < TP_EC_VOLUME_MAX) new_level++; continue; } else if (strlencmp(cmd, "down") == 0) { if (new_mute) new_mute = 0; else if (new_level > 0) new_level--; continue; } else if (sscanf(cmd, "level %u", &l) == 1 && l >= 0 && l <= TP_EC_VOLUME_MAX) { new_level = l; continue; } } if (strlencmp(cmd, "mute") == 0) new_mute = TP_EC_AUDIO_MUTESW_MSK; else if (strlencmp(cmd, "unmute") == 0) new_mute = 0; else return -EINVAL; } if (tp_features.mixer_no_level_control) { tpacpi_disclose_usertask("procfs volume", "%smute\n", new_mute ? "" : "un"); rc = volume_set_mute(!!new_mute); } else { tpacpi_disclose_usertask("procfs volume", "%smute and set level to %d\n", new_mute ? "" : "un", new_level); rc = volume_set_status(new_mute | new_level); } volume_alsa_notify_change(); return (rc == -EINTR) ? -ERESTARTSYS : rc; } static struct ibm_struct volume_driver_data = { .name = "volume", .read = volume_read, .write = volume_write, .exit = volume_exit, .suspend = volume_suspend, .resume = volume_resume, .shutdown = volume_shutdown, }; #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ #define alsa_card NULL static inline void volume_alsa_notify_change(void) { } static int __init volume_init(struct ibm_init_struct *iibm) { pr_info("volume: disabled as there is no ALSA support in this kernel\n"); return 1; } static struct ibm_struct volume_driver_data = { .name = "volume", }; #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ /************************************************************************* * Fan subdriver */ /* * FAN ACCESS MODES * * TPACPI_FAN_RD_ACPI_GFAN: * ACPI GFAN method: returns fan level * * see TPACPI_FAN_WR_ACPI_SFAN * EC 0x2f (HFSP) not available if GFAN exists * * TPACPI_FAN_WR_ACPI_SFAN: * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) * * EC 0x2f (HFSP) might be available *for reading*, but do not use * it for writing. * * TPACPI_FAN_WR_TPEC: * ThinkPad EC register 0x2f (HFSP): fan control loop mode * Supported on almost all ThinkPads * * Fan speed changes of any sort (including those caused by the * disengaged mode) are usually done slowly by the firmware as the * maximum amount of fan duty cycle change per second seems to be * limited. * * Reading is not available if GFAN exists. * Writing is not available if SFAN exists. * * Bits * 7 automatic mode engaged; * (default operation mode of the ThinkPad) * fan level is ignored in this mode. * 6 full speed mode (takes precedence over bit 7); * not available on all thinkpads. May disable * the tachometer while the fan controller ramps up * the speed (which can take up to a few *minutes*). * Speeds up fan to 100% duty-cycle, which is far above * the standard RPM levels. It is not impossible that * it could cause hardware damage. * 5-3 unused in some models. Extra bits for fan level * in others, but still useless as all values above * 7 map to the same speed as level 7 in these models. * 2-0 fan level (0..7 usually) * 0x00 = stop * 0x07 = max (set when temperatures critical) * Some ThinkPads may have other levels, see * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) * * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at * boot. Apparently the EC does not initialize it, so unless ACPI DSDT * does so, its initial value is meaningless (0x07). * * For firmware bugs, refer to: * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues * * ---- * * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): * Main fan tachometer reading (in RPM) * * This register is present on all ThinkPads with a new-style EC, and * it is known not to be present on the A21m/e, and T22, as there is * something else in offset 0x84 according to the ACPI DSDT. Other * ThinkPads from this same time period (and earlier) probably lack the * tachometer as well. * * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware * was never fixed by IBM to report the EC firmware version string * probably support the tachometer (like the early X models), so * detecting it is quite hard. We need more data to know for sure. * * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings * might result. * * FIRMWARE BUG: may go stale while the EC is switching to full speed * mode. * * For firmware bugs, refer to: * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues * * ---- * * ThinkPad EC register 0x31 bit 0 (only on select models) * * When bit 0 of EC register 0x31 is zero, the tachometer registers * show the speed of the main fan. When bit 0 of EC register 0x31 * is one, the tachometer registers show the speed of the auxiliary * fan. * * Fan control seems to affect both fans, regardless of the state * of this bit. * * So far, only the firmware for the X60/X61 non-tablet versions * seem to support this (firmware TP-7M). * * TPACPI_FAN_WR_ACPI_FANS: * ThinkPad X31, X40, X41. Not available in the X60. * * FANS ACPI handle: takes three arguments: low speed, medium speed, * high speed. ACPI DSDT seems to map these three speeds to levels * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") * * The speeds are stored on handles * (FANA:FAN9), (FANC:FANB), (FANE:FAND). * * There are three default speed sets, accessible as handles: * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H * * ACPI DSDT switches which set is in use depending on various * factors. * * TPACPI_FAN_WR_TPEC is also available and should be used to * command the fan. The X31/X40/X41 seems to have 8 fan levels, * but the ACPI tables just mention level 7. */ enum { /* Fan control constants */ fan_status_offset = 0x2f, /* EC register 0x2f */ fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) * 0x84 must be read before 0x85 */ fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) bit 0 selects which fan is active */ TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ }; enum fan_status_access_mode { TPACPI_FAN_NONE = 0, /* No fan status or control */ TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ }; enum fan_control_access_mode { TPACPI_FAN_WR_NONE = 0, /* No fan control */ TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ }; enum fan_control_commands { TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, * and also watchdog cmd */ }; static bool fan_control_allowed; static enum fan_status_access_mode fan_status_access_mode; static enum fan_control_access_mode fan_control_access_mode; static enum fan_control_commands fan_control_commands; static u8 fan_control_initial_status; static u8 fan_control_desired_level; static u8 fan_control_resume_level; static int fan_watchdog_maxinterval; static struct mutex fan_mutex; static void fan_watchdog_fire(struct work_struct *ignored); static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ "\\FSPD", /* 600e/x, 770e, 770x */ ); /* all others */ TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ "JFNS", /* 770x-JL */ ); /* all others */ /* * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the * HFSP register at boot, so it contains 0x07 but the Thinkpad could * be in auto mode (0x80). * * This is corrected by any write to HFSP either by the driver, or * by the firmware. * * We assume 0x07 really means auto mode while this quirk is active, * as this is far more likely than the ThinkPad being in level 7, * which is only used by the firmware during thermal emergencies. * * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), * TP-70 (T43, R52), which are known to be buggy. */ static void fan_quirk1_setup(void) { if (fan_control_initial_status == 0x07) { pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); tp_features.fan_ctrl_status_undef = 1; } } static void fan_quirk1_handle(u8 *fan_status) { if (unlikely(tp_features.fan_ctrl_status_undef)) { if (*fan_status != fan_control_initial_status) { /* something changed the HFSP regisnter since * driver init time, so it is not undefined * anymore */ tp_features.fan_ctrl_status_undef = 0; } else { /* Return most likely status. In fact, it * might be the only possible status */ *fan_status = TP_EC_FAN_AUTO; } } } /* Select main fan on X60/X61, NOOP on others */ static bool fan_select_fan1(void) { if (tp_features.second_fan) { u8 val; if (ec_read(fan_select_offset, &val) < 0) return false; val &= 0xFEU; if (ec_write(fan_select_offset, val) < 0) return false; } return true; } /* Select secondary fan on X60/X61 */ static bool fan_select_fan2(void) { u8 val; if (!tp_features.second_fan) return false; if (ec_read(fan_select_offset, &val) < 0) return false; val |= 0x01U; if (ec_write(fan_select_offset, val) < 0) return false; return true; } /* * Call with fan_mutex held */ static void fan_update_desired_level(u8 status) { if ((status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { if (status > 7) fan_control_desired_level = 7; else fan_control_desired_level = status; } } static int fan_get_status(u8 *status) { u8 s; /* TODO: * Add TPACPI_FAN_RD_ACPI_FANS ? */ switch (fan_status_access_mode) { case TPACPI_FAN_RD_ACPI_GFAN: { /* 570, 600e/x, 770e, 770x */ int res; if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) return -EIO; if (likely(status)) *status = res & 0x07; break; } case TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ if (unlikely(!acpi_ec_read(fan_status_offset, &s))) return -EIO; if (likely(status)) { *status = s; fan_quirk1_handle(status); } break; default: return -ENXIO; } return 0; } static int fan_get_status_safe(u8 *status) { int rc; u8 s; if (mutex_lock_killable(&fan_mutex)) return -ERESTARTSYS; rc = fan_get_status(&s); if (!rc) fan_update_desired_level(s); mutex_unlock(&fan_mutex); if (rc) return rc; if (status) *status = s; return 0; } static int fan_get_speed(unsigned int *speed) { u8 hi, lo; switch (fan_status_access_mode) { case TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ if (unlikely(!fan_select_fan1())) return -EIO; if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || !acpi_ec_read(fan_rpm_offset + 1, &hi))) return -EIO; if (likely(speed)) *speed = (hi << 8) | lo; break; default: return -ENXIO; } return 0; } static int fan2_get_speed(unsigned int *speed) { u8 hi, lo; bool rc; switch (fan_status_access_mode) { case TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ if (unlikely(!fan_select_fan2())) return -EIO; rc = !acpi_ec_read(fan_rpm_offset, &lo) || !acpi_ec_read(fan_rpm_offset + 1, &hi); fan_select_fan1(); /* play it safe */ if (rc) return -EIO; if (likely(speed)) *speed = (hi << 8) | lo; break; default: return -ENXIO; } return 0; } static int fan_set_level(int level) { if (!fan_control_allowed) return -EPERM; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_SFAN: if (level >= 0 && level <= 7) { if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) return -EIO; } else return -EINVAL; break; case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: if (!(level & TP_EC_FAN_AUTO) && !(level & TP_EC_FAN_FULLSPEED) && ((level < 0) || (level > 7))) return -EINVAL; /* safety net should the EC not support AUTO * or FULLSPEED mode bits and just ignore them */ if (level & TP_EC_FAN_FULLSPEED) level |= 7; /* safety min speed 7 */ else if (level & TP_EC_FAN_AUTO) level |= 4; /* safety min speed 4 */ if (!acpi_ec_write(fan_status_offset, level)) return -EIO; else tp_features.fan_ctrl_status_undef = 0; break; default: return -ENXIO; } vdbg_printk(TPACPI_DBG_FAN, "fan control: set fan control register to 0x%02x\n", level); return 0; } static int fan_set_level_safe(int level) { int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_killable(&fan_mutex)) return -ERESTARTSYS; if (level == TPACPI_FAN_LAST_LEVEL) level = fan_control_desired_level; rc = fan_set_level(level); if (!rc) fan_update_desired_level(level); mutex_unlock(&fan_mutex); return rc; } static int fan_set_enable(void) { u8 s; int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_killable(&fan_mutex)) return -ERESTARTSYS; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: rc = fan_get_status(&s); if (rc < 0) break; /* Don't go out of emergency fan mode */ if (s != 7) { s &= 0x07; s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ } if (!acpi_ec_write(fan_status_offset, s)) rc = -EIO; else { tp_features.fan_ctrl_status_undef = 0; rc = 0; } break; case TPACPI_FAN_WR_ACPI_SFAN: rc = fan_get_status(&s); if (rc < 0) break; s &= 0x07; /* Set fan to at least level 4 */ s |= 4; if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) rc = -EIO; else rc = 0; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); if (!rc) vdbg_printk(TPACPI_DBG_FAN, "fan control: set fan control register to 0x%02x\n", s); return rc; } static int fan_set_disable(void) { int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_killable(&fan_mutex)) return -ERESTARTSYS; rc = 0; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: if (!acpi_ec_write(fan_status_offset, 0x00)) rc = -EIO; else { fan_control_desired_level = 0; tp_features.fan_ctrl_status_undef = 0; } break; case TPACPI_FAN_WR_ACPI_SFAN: if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) rc = -EIO; else fan_control_desired_level = 0; break; default: rc = -ENXIO; } if (!rc) vdbg_printk(TPACPI_DBG_FAN, "fan control: set fan control register to 0\n"); mutex_unlock(&fan_mutex); return rc; } static int fan_set_speed(int speed) { int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_killable(&fan_mutex)) return -ERESTARTSYS; rc = 0; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: if (speed >= 0 && speed <= 65535) { if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", speed, speed, speed)) rc = -EIO; } else rc = -EINVAL; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); return rc; } static void fan_watchdog_reset(void) { if (fan_control_access_mode == TPACPI_FAN_WR_NONE) return; if (fan_watchdog_maxinterval > 0 && tpacpi_lifecycle != TPACPI_LIFE_EXITING) mod_delayed_work(tpacpi_wq, &fan_watchdog_task, msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); else cancel_delayed_work(&fan_watchdog_task); } static void fan_watchdog_fire(struct work_struct *ignored) { int rc; if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) return; pr_notice("fan watchdog: enabling fan\n"); rc = fan_set_enable(); if (rc < 0) { pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", rc); /* reschedule for later */ fan_watchdog_reset(); } } /* * SYSFS fan layout: hwmon compatible (device) * * pwm*_enable: * 0: "disengaged" mode * 1: manual mode * 2: native EC "auto" mode (recommended, hardware default) * * pwm*: set speed in manual mode, ignored otherwise. * 0 is level 0; 255 is level 7. Intermediate points done with linear * interpolation. * * fan*_input: tachometer reading, RPM * * * SYSFS fan layout: extensions * * fan_watchdog (driver): * fan watchdog interval in seconds, 0 disables (default), max 120 */ /* sysfs fan pwm1_enable ----------------------------------------------- */ static ssize_t fan_pwm1_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, mode; u8 status; res = fan_get_status_safe(&status); if (res) return res; if (status & TP_EC_FAN_FULLSPEED) { mode = 0; } else if (status & TP_EC_FAN_AUTO) { mode = 2; } else mode = 1; return snprintf(buf, PAGE_SIZE, "%d\n", mode); } static ssize_t fan_pwm1_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res, level; if (parse_strtoul(buf, 2, &t)) return -EINVAL; tpacpi_disclose_usertask("hwmon pwm1_enable", "set fan mode to %lu\n", t); switch (t) { case 0: level = TP_EC_FAN_FULLSPEED; break; case 1: level = TPACPI_FAN_LAST_LEVEL; break; case 2: level = TP_EC_FAN_AUTO; break; case 3: /* reserved for software-controlled auto mode */ return -ENOSYS; default: return -EINVAL; } res = fan_set_level_safe(level); if (res == -ENXIO) return -EINVAL; else if (res < 0) return res; fan_watchdog_reset(); return count; } static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, fan_pwm1_enable_show, fan_pwm1_enable_store); /* sysfs fan pwm1 ------------------------------------------------------ */ static ssize_t fan_pwm1_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; u8 status; res = fan_get_status_safe(&status); if (res) return res; if ((status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) status = fan_control_desired_level; if (status > 7) status = 7; return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); } static ssize_t fan_pwm1_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long s; int rc; u8 status, newlevel; if (parse_strtoul(buf, 255, &s)) return -EINVAL; tpacpi_disclose_usertask("hwmon pwm1", "set fan speed to %lu\n", s); /* scale down from 0-255 to 0-7 */ newlevel = (s >> 5) & 0x07; if (mutex_lock_killable(&fan_mutex)) return -ERESTARTSYS; rc = fan_get_status(&status); if (!rc && (status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { rc = fan_set_level(newlevel); if (rc == -ENXIO) rc = -EINVAL; else if (!rc) { fan_update_desired_level(newlevel); fan_watchdog_reset(); } } mutex_unlock(&fan_mutex); return (rc) ? rc : count; } static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); /* sysfs fan fan1_input ------------------------------------------------ */ static ssize_t fan_fan1_input_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; unsigned int speed; res = fan_get_speed(&speed); if (res < 0) return res; return snprintf(buf, PAGE_SIZE, "%u\n", speed); } static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); /* sysfs fan fan2_input ------------------------------------------------ */ static ssize_t fan_fan2_input_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; unsigned int speed; res = fan2_get_speed(&speed); if (res < 0) return res; return snprintf(buf, PAGE_SIZE, "%u\n", speed); } static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); } static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 120, &t)) return -EINVAL; if (!fan_control_allowed) return -EPERM; fan_watchdog_maxinterval = t; fan_watchdog_reset(); tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); return count; } static DRIVER_ATTR_RW(fan_watchdog); /* --------------------------------------------------------------------- */ static struct attribute *fan_attributes[] = { &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, &dev_attr_fan1_input.attr, NULL, /* for fan2_input */ NULL }; static const struct attribute_group fan_attr_group = { .attrs = fan_attributes, }; #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ static const struct tpacpi_quirk fan_quirk_table[] __initconst = { TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), }; static int __init fan_init(struct ibm_init_struct *iibm) { int rc; unsigned long quirks; vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, "initializing fan subdriver\n"); mutex_init(&fan_mutex); fan_status_access_mode = TPACPI_FAN_NONE; fan_control_access_mode = TPACPI_FAN_WR_NONE; fan_control_commands = 0; fan_watchdog_maxinterval = 0; tp_features.fan_ctrl_status_undef = 0; tp_features.second_fan = 0; fan_control_desired_level = 7; if (tpacpi_is_ibm()) { TPACPI_ACPIHANDLE_INIT(fans); TPACPI_ACPIHANDLE_INIT(gfan); TPACPI_ACPIHANDLE_INIT(sfan); } quirks = tpacpi_check_quirks(fan_quirk_table, ARRAY_SIZE(fan_quirk_table)); if (gfan_handle) { /* 570, 600e/x, 770e, 770x */ fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; } else { /* all other ThinkPads: note that even old-style * ThinkPad ECs supports the fan control register */ if (likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { fan_status_access_mode = TPACPI_FAN_RD_TPEC; if (quirks & TPACPI_FAN_Q1) fan_quirk1_setup(); if (quirks & TPACPI_FAN_2FAN) { tp_features.second_fan = 1; dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, "secondary fan support enabled\n"); } } else { pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); return 1; } } if (sfan_handle) { /* 570, 770x-JL */ fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; fan_control_commands |= TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } else { if (!gfan_handle) { /* gfan without sfan means no fan control */ /* all other models implement TP EC 0x2f control */ if (fans_handle) { /* X31, X40, X41 */ fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANS; fan_control_commands |= TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } else { fan_control_access_mode = TPACPI_FAN_WR_TPEC; fan_control_commands |= TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } } } vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, "fan is %s, modes %d, %d\n", str_supported(fan_status_access_mode != TPACPI_FAN_NONE || fan_control_access_mode != TPACPI_FAN_WR_NONE), fan_status_access_mode, fan_control_access_mode); /* fan control master switch */ if (!fan_control_allowed) { fan_control_access_mode = TPACPI_FAN_WR_NONE; fan_control_commands = 0; dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, "fan control features disabled by parameter\n"); } /* update fan_control_desired_level */ if (fan_status_access_mode != TPACPI_FAN_NONE) fan_get_status_safe(NULL); if (fan_status_access_mode != TPACPI_FAN_NONE || fan_control_access_mode != TPACPI_FAN_WR_NONE) { if (tp_features.second_fan) { /* attach second fan tachometer */ fan_attributes[ARRAY_SIZE(fan_attributes)-2] = &dev_attr_fan2_input.attr; } rc = sysfs_create_group(&tpacpi_hwmon->kobj, &fan_attr_group); if (rc < 0) return rc; rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog); if (rc < 0) { sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); return rc; } return 0; } else return 1; } static void fan_exit(void) { vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, "cancelling any pending fan watchdog tasks\n"); /* FIXME: can we really do this unconditionally? */ sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog); cancel_delayed_work(&fan_watchdog_task); flush_workqueue(tpacpi_wq); } static void fan_suspend(void) { int rc; if (!fan_control_allowed) return; /* Store fan status in cache */ fan_control_resume_level = 0; rc = fan_get_status_safe(&fan_control_resume_level); if (rc < 0) pr_notice("failed to read fan level for later restore during resume: %d\n", rc); /* if it is undefined, don't attempt to restore it. * KEEP THIS LAST */ if (tp_features.fan_ctrl_status_undef) fan_control_resume_level = 0; } static void fan_resume(void) { u8 current_level = 7; bool do_set = false; int rc; /* DSDT *always* updates status on resume */ tp_features.fan_ctrl_status_undef = 0; if (!fan_control_allowed || !fan_control_resume_level || (fan_get_status_safe(¤t_level) < 0)) return; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_SFAN: /* never decrease fan level */ do_set = (fan_control_resume_level > current_level); break; case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: /* never decrease fan level, scale is: * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO * * We expect the firmware to set either 7 or AUTO, but we * handle FULLSPEED out of paranoia. * * So, we can safely only restore FULLSPEED or 7, anything * else could slow the fan. Restoring AUTO is useless, at * best that's exactly what the DSDT already set (it is the * slower it uses). * * Always keep in mind that the DSDT *will* have set the * fans to what the vendor supposes is the best level. We * muck with it only to speed the fan up. */ if (fan_control_resume_level != 7 && !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) return; else do_set = !(current_level & TP_EC_FAN_FULLSPEED) && (current_level != fan_control_resume_level); break; default: return; } if (do_set) { pr_notice("restoring fan level to 0x%02x\n", fan_control_resume_level); rc = fan_set_level_safe(fan_control_resume_level); if (rc < 0) pr_notice("failed to restore fan level: %d\n", rc); } } static int fan_read(struct seq_file *m) { int rc; u8 status; unsigned int speed = 0; switch (fan_status_access_mode) { case TPACPI_FAN_RD_ACPI_GFAN: /* 570, 600e/x, 770e, 770x */ rc = fan_get_status_safe(&status); if (rc < 0) return rc; seq_printf(m, "status:\t\t%s\n" "level:\t\t%d\n", (status != 0) ? "enabled" : "disabled", status); break; case TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ rc = fan_get_status_safe(&status); if (rc < 0) return rc; seq_printf(m, "status:\t\t%s\n", (status != 0) ? "enabled" : "disabled"); rc = fan_get_speed(&speed); if (rc < 0) return rc; seq_printf(m, "speed:\t\t%d\n", speed); if (status & TP_EC_FAN_FULLSPEED) /* Disengaged mode takes precedence */ seq_printf(m, "level:\t\tdisengaged\n"); else if (status & TP_EC_FAN_AUTO) seq_printf(m, "level:\t\tauto\n"); else seq_printf(m, "level:\t\t%d\n", status); break; case TPACPI_FAN_NONE: default: seq_printf(m, "status:\t\tnot supported\n"); } if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { seq_printf(m, "commands:\tlevel <level>"); switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_SFAN: seq_printf(m, " (<level> is 0-7)\n"); break; default: seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); break; } } if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) seq_printf(m, "commands:\tenable, disable\n" "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); if (fan_control_commands & TPACPI_FAN_CMD_SPEED) seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); return 0; } static int fan_write_cmd_level(const char *cmd, int *rc) { int level; if (strlencmp(cmd, "level auto") == 0) level = TP_EC_FAN_AUTO; else if ((strlencmp(cmd, "level disengaged") == 0) | (strlencmp(cmd, "level full-speed") == 0)) level = TP_EC_FAN_FULLSPEED; else if (sscanf(cmd, "level %d", &level) != 1) return 0; *rc = fan_set_level_safe(level); if (*rc == -ENXIO) pr_err("level command accepted for unsupported access mode %d\n", fan_control_access_mode); else if (!*rc) tpacpi_disclose_usertask("procfs fan", "set level to %d\n", level); return 1; } static int fan_write_cmd_enable(const char *cmd, int *rc) { if (strlencmp(cmd, "enable") != 0) return 0; *rc = fan_set_enable(); if (*rc == -ENXIO) pr_err("enable command accepted for unsupported access mode %d\n", fan_control_access_mode); else if (!*rc) tpacpi_disclose_usertask("procfs fan", "enable\n"); return 1; } static int fan_write_cmd_disable(const char *cmd, int *rc) { if (strlencmp(cmd, "disable") != 0) return 0; *rc = fan_set_disable(); if (*rc == -ENXIO) pr_err("disable command accepted for unsupported access mode %d\n", fan_control_access_mode); else if (!*rc) tpacpi_disclose_usertask("procfs fan", "disable\n"); return 1; } static int fan_write_cmd_speed(const char *cmd, int *rc) { int speed; /* TODO: * Support speed <low> <medium> <high> ? */ if (sscanf(cmd, "speed %d", &speed) != 1) return 0; *rc = fan_set_speed(speed); if (*rc == -ENXIO) pr_err("speed command accepted for unsupported access mode %d\n", fan_control_access_mode); else if (!*rc) tpacpi_disclose_usertask("procfs fan", "set speed to %d\n", speed); return 1; } static int fan_write_cmd_watchdog(const char *cmd, int *rc) { int interval; if (sscanf(cmd, "watchdog %d", &interval) != 1) return 0; if (interval < 0 || interval > 120) *rc = -EINVAL; else { fan_watchdog_maxinterval = interval; tpacpi_disclose_usertask("procfs fan", "set watchdog timer to %d\n", interval); } return 1; } static int fan_write(char *buf) { char *cmd; int rc = 0; while (!rc && (cmd = next_cmd(&buf))) { if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && fan_write_cmd_level(cmd, &rc)) && !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && (fan_write_cmd_enable(cmd, &rc) || fan_write_cmd_disable(cmd, &rc) || fan_write_cmd_watchdog(cmd, &rc))) && !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && fan_write_cmd_speed(cmd, &rc)) ) rc = -EINVAL; else if (!rc) fan_watchdog_reset(); } return rc; } static struct ibm_struct fan_driver_data = { .name = "fan", .read = fan_read, .write = fan_write, .exit = fan_exit, .suspend = fan_suspend, .resume = fan_resume, }; /************************************************************************* * Mute LED subdriver */ #define TPACPI_LED_MAX 2 struct tp_led_table { acpi_string name; int on_value; int off_value; int state; }; static struct tp_led_table led_tables[TPACPI_LED_MAX] = { [LED_AUDIO_MUTE] = { .name = "SSMS", .on_value = 1, .off_value = 0, }, [LED_AUDIO_MICMUTE] = { .name = "MMTS", .on_value = 2, .off_value = 0, }, }; static int mute_led_on_off(struct tp_led_table *t, bool state) { acpi_handle temp; int output; if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); return -EIO; } if (!acpi_evalf(hkey_handle, &output, t->name, "dd", state ? t->on_value : t->off_value)) return -EIO; t->state = state; return state; } static int tpacpi_led_set(int whichled, bool on) { struct tp_led_table *t; t = &led_tables[whichled]; if (t->state < 0 || t->state == on) return t->state; return mute_led_on_off(t, on); } static int tpacpi_led_mute_set(struct led_classdev *led_cdev, enum led_brightness brightness) { return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); } static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, enum led_brightness brightness) { return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); } static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { [LED_AUDIO_MUTE] = { .name = "platform::mute", .max_brightness = 1, .brightness_set_blocking = tpacpi_led_mute_set, .default_trigger = "audio-mute", }, [LED_AUDIO_MICMUTE] = { .name = "platform::micmute", .max_brightness = 1, .brightness_set_blocking = tpacpi_led_micmute_set, .default_trigger = "audio-micmute", }, }; static int mute_led_init(struct ibm_init_struct *iibm) { acpi_handle temp; int i, err; for (i = 0; i < TPACPI_LED_MAX; i++) { struct tp_led_table *t = &led_tables[i]; if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { t->state = -ENODEV; continue; } mute_led_cdev[i].brightness = ledtrig_audio_get(i); err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); if (err < 0) { while (i--) { if (led_tables[i].state >= 0) led_classdev_unregister(&mute_led_cdev[i]); } return err; } } return 0; } static void mute_led_exit(void) { int i; for (i = 0; i < TPACPI_LED_MAX; i++) { if (led_tables[i].state >= 0) { led_classdev_unregister(&mute_led_cdev[i]); tpacpi_led_set(i, false); } } } static void mute_led_resume(void) { int i; for (i = 0; i < TPACPI_LED_MAX; i++) { struct tp_led_table *t = &led_tables[i]; if (t->state >= 0) mute_led_on_off(t, t->state); } } static struct ibm_struct mute_led_driver_data = { .name = "mute_led", .exit = mute_led_exit, .resume = mute_led_resume, }; /* * Battery Wear Control Driver * Contact: Ognjen Galic <smclt30p@gmail.com> */ /* Metadata */ #define GET_START "BCTG" #define SET_START "BCCS" #define GET_STOP "BCSG" #define SET_STOP "BCSS" #define START_ATTR "charge_start_threshold" #define STOP_ATTR "charge_stop_threshold" enum { BAT_ANY = 0, BAT_PRIMARY = 1, BAT_SECONDARY = 2 }; enum { /* Error condition bit */ METHOD_ERR = BIT(31), }; enum { /* This is used in the get/set helpers */ THRESHOLD_START, THRESHOLD_STOP, }; struct tpacpi_battery_data { int charge_start; int start_support; int charge_stop; int stop_support; }; struct tpacpi_battery_driver_data { struct tpacpi_battery_data batteries[3]; int individual_addressing; }; static struct tpacpi_battery_driver_data battery_info; /* ACPI helpers/functions/probes */ /** * This evaluates a ACPI method call specific to the battery * ACPI extension. The specifics are that an error is marked * in the 32rd bit of the response, so we just check that here. */ static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) { int response; if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { acpi_handle_err(hkey_handle, "%s: evaluate failed", method); return AE_ERROR; } if (response & METHOD_ERR) { acpi_handle_err(hkey_handle, "%s evaluated but flagged as error", method); return AE_ERROR; } *ret = response; return AE_OK; } static int tpacpi_battery_get(int what, int battery, int *ret) { switch (what) { case THRESHOLD_START: if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) return -ENODEV; /* The value is in the low 8 bits of the response */ *ret = *ret & 0xFF; return 0; case THRESHOLD_STOP: if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) return -ENODEV; /* Value is in lower 8 bits */ *ret = *ret & 0xFF; /* * On the stop value, if we return 0 that * does not make any sense. 0 means Default, which * means that charging stops at 100%, so we return * that. */ if (*ret == 0) *ret = 100; return 0; default: pr_crit("wrong parameter: %d", what); return -EINVAL; } } static int tpacpi_battery_set(int what, int battery, int value) { int param, ret; /* The first 8 bits are the value of the threshold */ param = value; /* The battery ID is in bits 8-9, 2 bits */ param |= battery << 8; switch (what) { case THRESHOLD_START: if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { pr_err("failed to set charge threshold on battery %d", battery); return -ENODEV; } return 0; case THRESHOLD_STOP: if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { pr_err("failed to set stop threshold: %d", battery); return -ENODEV; } return 0; default: pr_crit("wrong parameter: %d", what); return -EINVAL; } } static int tpacpi_battery_probe(int battery) { int ret = 0; memset(&battery_info.batteries[battery], 0, sizeof(battery_info.batteries[battery])); /* * 1) Get the current start threshold * 2) Check for support * 3) Get the current stop threshold * 4) Check for support */ if (acpi_has_method(hkey_handle, GET_START)) { if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { pr_err("Error probing battery %d\n", battery); return -ENODEV; } /* Individual addressing is in bit 9 */ if (ret & BIT(9)) battery_info.individual_addressing = true; /* Support is marked in bit 8 */ if (ret & BIT(8)) battery_info.batteries[battery].start_support = 1; else return -ENODEV; if (tpacpi_battery_get(THRESHOLD_START, battery, &battery_info.batteries[battery].charge_start)) { pr_err("Error probing battery %d\n", battery); return -ENODEV; } } if (acpi_has_method(hkey_handle, GET_STOP)) { if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { pr_err("Error probing battery stop; %d\n", battery); return -ENODEV; } /* Support is marked in bit 8 */ if (ret & BIT(8)) battery_info.batteries[battery].stop_support = 1; else return -ENODEV; if (tpacpi_battery_get(THRESHOLD_STOP, battery, &battery_info.batteries[battery].charge_stop)) { pr_err("Error probing battery stop: %d\n", battery); return -ENODEV; } } pr_info("battery %d registered (start %d, stop %d)", battery, battery_info.batteries[battery].charge_start, battery_info.batteries[battery].charge_stop); return 0; } /* General helper functions */ static int tpacpi_battery_get_id(const char *battery_name) { if (strcmp(battery_name, "BAT0") == 0 || tp_features.battery_force_primary) return BAT_PRIMARY; if (strcmp(battery_name, "BAT1") == 0) return BAT_SECONDARY; /* * If for some reason the battery is not BAT0 nor is it * BAT1, we will assume it's the default, first battery, * AKA primary. */ pr_warn("unknown battery %s, assuming primary", battery_name); return BAT_PRIMARY; } /* sysfs interface */ static ssize_t tpacpi_battery_store(int what, struct device *dev, const char *buf, size_t count) { struct power_supply *supply = to_power_supply(dev); unsigned long value; int battery, rval; /* * Some systems have support for more than * one battery. If that is the case, * tpacpi_battery_probe marked that addressing * them individually is supported, so we do that * based on the device struct. * * On systems that are not supported, we assume * the primary as most of the ACPI calls fail * with "Any Battery" as the parameter. */ if (battery_info.individual_addressing) /* BAT_PRIMARY or BAT_SECONDARY */ battery = tpacpi_battery_get_id(supply->desc->name); else battery = BAT_PRIMARY; rval = kstrtoul(buf, 10, &value); if (rval) return rval; switch (what) { case THRESHOLD_START: if (!battery_info.batteries[battery].start_support) return -ENODEV; /* valid values are [0, 99] */ if (value > 99) return -EINVAL; if (value > battery_info.batteries[battery].charge_stop) return -EINVAL; if (tpacpi_battery_set(THRESHOLD_START, battery, value)) return -ENODEV; battery_info.batteries[battery].charge_start = value; return count; case THRESHOLD_STOP: if (!battery_info.batteries[battery].stop_support) return -ENODEV; /* valid values are [1, 100] */ if (value < 1 || value > 100) return -EINVAL; if (value < battery_info.batteries[battery].charge_start) return -EINVAL; battery_info.batteries[battery].charge_stop = value; /* * When 100 is passed to stop, we need to flip * it to 0 as that the EC understands that as * "Default", which will charge to 100% */ if (value == 100) value = 0; if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) return -EINVAL; return count; default: pr_crit("Wrong parameter: %d", what); return -EINVAL; } return count; } static ssize_t tpacpi_battery_show(int what, struct device *dev, char *buf) { struct power_supply *supply = to_power_supply(dev); int ret, battery; /* * Some systems have support for more than * one battery. If that is the case, * tpacpi_battery_probe marked that addressing * them individually is supported, so we; * based on the device struct. * * On systems that are not supported, we assume * the primary as most of the ACPI calls fail * with "Any Battery" as the parameter. */ if (battery_info.individual_addressing) /* BAT_PRIMARY or BAT_SECONDARY */ battery = tpacpi_battery_get_id(supply->desc->name); else battery = BAT_PRIMARY; if (tpacpi_battery_get(what, battery, &ret)) return -ENODEV; return sprintf(buf, "%d\n", ret); } static ssize_t charge_start_threshold_show(struct device *device, struct device_attribute *attr, char *buf) { return tpacpi_battery_show(THRESHOLD_START, device, buf); } static ssize_t charge_stop_threshold_show(struct device *device, struct device_attribute *attr, char *buf) { return tpacpi_battery_show(THRESHOLD_STOP, device, buf); } static ssize_t charge_start_threshold_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); } static ssize_t charge_stop_threshold_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); } static DEVICE_ATTR_RW(charge_start_threshold); static DEVICE_ATTR_RW(charge_stop_threshold); static struct attribute *tpacpi_battery_attrs[] = { &dev_attr_charge_start_threshold.attr, &dev_attr_charge_stop_threshold.attr, NULL, }; ATTRIBUTE_GROUPS(tpacpi_battery); /* ACPI battery hooking */ static int tpacpi_battery_add(struct power_supply *battery) { int batteryid = tpacpi_battery_get_id(battery->desc->name); if (tpacpi_battery_probe(batteryid)) return -ENODEV; if (device_add_groups(&battery->dev, tpacpi_battery_groups)) return -ENODEV; return 0; } static int tpacpi_battery_remove(struct power_supply *battery) { device_remove_groups(&battery->dev, tpacpi_battery_groups); return 0; } static struct acpi_battery_hook battery_hook = { .add_battery = tpacpi_battery_add, .remove_battery = tpacpi_battery_remove, .name = "ThinkPad Battery Extension", }; /* Subdriver init/exit */ static const struct tpacpi_quirk battery_quirk_table[] __initconst = { /* * Individual addressing is broken on models that expose the * primary battery as BAT1. */ TPACPI_Q_LNV('J', '7', true), /* B5400 */ TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ }; static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) { memset(&battery_info, 0, sizeof(battery_info)); tp_features.battery_force_primary = tpacpi_check_quirks( battery_quirk_table, ARRAY_SIZE(battery_quirk_table)); battery_hook_register(&battery_hook); return 0; } static void tpacpi_battery_exit(void) { battery_hook_unregister(&battery_hook); } static struct ibm_struct battery_driver_data = { .name = "battery", .exit = tpacpi_battery_exit, }; /************************************************************************* * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature */ static int lcdshadow_state; static int lcdshadow_on_off(bool state) { acpi_handle set_shadow_handle; int output; if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); return -EIO; } if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) return -EIO; lcdshadow_state = state; return 0; } static int lcdshadow_set(bool on) { if (lcdshadow_state < 0) return lcdshadow_state; if (lcdshadow_state == on) return 0; return lcdshadow_on_off(on); } static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) { acpi_handle get_shadow_handle; int output; if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { lcdshadow_state = -ENODEV; return 0; } if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { lcdshadow_state = -EIO; return -EIO; } if (!(output & 0x10000)) { lcdshadow_state = -ENODEV; return 0; } lcdshadow_state = output & 0x1; return 0; } static void lcdshadow_resume(void) { if (lcdshadow_state >= 0) lcdshadow_on_off(lcdshadow_state); } static int lcdshadow_read(struct seq_file *m) { if (lcdshadow_state < 0) { seq_puts(m, "status:\t\tnot supported\n"); } else { seq_printf(m, "status:\t\t%d\n", lcdshadow_state); seq_puts(m, "commands:\t0, 1\n"); } return 0; } static int lcdshadow_write(char *buf) { char *cmd; int state = -1; if (lcdshadow_state < 0) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "0") == 0) state = 0; else if (strlencmp(cmd, "1") == 0) state = 1; } if (state == -1) return -EINVAL; return lcdshadow_set(state); } static struct ibm_struct lcdshadow_driver_data = { .name = "lcdshadow", .resume = lcdshadow_resume, .read = lcdshadow_read, .write = lcdshadow_write, }; /**************************************************************************** **************************************************************************** * * Infrastructure * **************************************************************************** ****************************************************************************/ /* * HKEY event callout for other subdrivers go here * (yes, it is ugly, but it is quick, safe, and gets the job done */ static void tpacpi_driver_event(const unsigned int hkey_event) { if (ibm_backlight_device) { switch (hkey_event) { case TP_HKEY_EV_BRGHT_UP: case TP_HKEY_EV_BRGHT_DOWN: tpacpi_brightness_notify_change(); } } if (alsa_card) { switch (hkey_event) { case TP_HKEY_EV_VOL_UP: case TP_HKEY_EV_VOL_DOWN: case TP_HKEY_EV_VOL_MUTE: volume_alsa_notify_change(); } } if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { enum led_brightness brightness; mutex_lock(&kbdlight_mutex); /* * Check the brightness actually changed, setting the brightness * through kbdlight_set_level() also triggers this event. */ brightness = kbdlight_sysfs_get(NULL); if (kbdlight_brightness != brightness) { kbdlight_brightness = brightness; led_classdev_notify_brightness_hw_changed( &tpacpi_led_kbdlight.led_classdev, brightness); } mutex_unlock(&kbdlight_mutex); } } static void hotkey_driver_event(const unsigned int scancode) { tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); } /* --------------------------------------------------------------------- */ /* /proc support */ static struct proc_dir_entry *proc_dir; /* * Module and infrastructure proble, init and exit handling */ static bool force_load; #ifdef CONFIG_THINKPAD_ACPI_DEBUG static const char * __init str_supported(int is_supported) { static char text_unsupported[] __initdata = "not supported"; return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; } #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ static void ibm_exit(struct ibm_struct *ibm) { dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); list_del_init(&ibm->all_drivers); if (ibm->flags.acpi_notify_installed) { dbg_printk(TPACPI_DBG_EXIT, "%s: acpi_remove_notify_handler\n", ibm->name); BUG_ON(!ibm->acpi); acpi_remove_notify_handler(*ibm->acpi->handle, ibm->acpi->type, dispatch_acpi_notify); ibm->flags.acpi_notify_installed = 0; } if (ibm->flags.proc_created) { dbg_printk(TPACPI_DBG_EXIT, "%s: remove_proc_entry\n", ibm->name); remove_proc_entry(ibm->name, proc_dir); ibm->flags.proc_created = 0; } if (ibm->flags.acpi_driver_registered) { dbg_printk(TPACPI_DBG_EXIT, "%s: acpi_bus_unregister_driver\n", ibm->name); BUG_ON(!ibm->acpi); acpi_bus_unregister_driver(ibm->acpi->driver); kfree(ibm->acpi->driver); ibm->acpi->driver = NULL; ibm->flags.acpi_driver_registered = 0; } if (ibm->flags.init_called && ibm->exit) { ibm->exit(); ibm->flags.init_called = 0; } dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); } static int __init ibm_init(struct ibm_init_struct *iibm) { int ret; struct ibm_struct *ibm = iibm->data; struct proc_dir_entry *entry; BUG_ON(ibm == NULL); INIT_LIST_HEAD(&ibm->all_drivers); if (ibm->flags.experimental && !experimental) return 0; dbg_printk(TPACPI_DBG_INIT, "probing for %s\n", ibm->name); if (iibm->init) { ret = iibm->init(iibm); if (ret > 0) return 0; /* probe failed */ if (ret) return ret; ibm->flags.init_called = 1; } if (ibm->acpi) { if (ibm->acpi->hid) { ret = register_tpacpi_subdriver(ibm); if (ret) goto err_out; } if (ibm->acpi->notify) { ret = setup_acpi_notify(ibm); if (ret == -ENODEV) { pr_notice("disabling subdriver %s\n", ibm->name); ret = 0; goto err_out; } if (ret < 0) goto err_out; } } dbg_printk(TPACPI_DBG_INIT, "%s installed\n", ibm->name); if (ibm->read) { umode_t mode = iibm->base_procfs_mode; if (!mode) mode = S_IRUGO; if (ibm->write) mode |= S_IWUSR; entry = proc_create_data(ibm->name, mode, proc_dir, &dispatch_proc_ops, ibm); if (!entry) { pr_err("unable to create proc entry %s\n", ibm->name); ret = -ENODEV; goto err_out; } ibm->flags.proc_created = 1; } list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); return 0; err_out: dbg_printk(TPACPI_DBG_INIT, "%s: at error exit path with result %d\n", ibm->name, ret); ibm_exit(ibm); return (ret < 0) ? ret : 0; } /* Probing */ static char __init tpacpi_parse_fw_id(const char * const s, u32 *model, u16 *release) { int i; if (!s || strlen(s) < 8) goto invalid; for (i = 0; i < 8; i++) if (!((s[i] >= '0' && s[i] <= '9') || (s[i] >= 'A' && s[i] <= 'Z'))) goto invalid; /* * Most models: xxyTkkWW (#.##c) * Ancient 570/600 and -SL lacks (#.##c) */ if (s[3] == 'T' || s[3] == 'N') { *model = TPID(s[0], s[1]); *release = TPVER(s[4], s[5]); return s[2]; /* New models: xxxyTkkW (#.##c); T550 and some others */ } else if (s[4] == 'T' || s[4] == 'N') { *model = TPID3(s[0], s[1], s[2]); *release = TPVER(s[5], s[6]); return s[3]; } invalid: return '\0'; } static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) { char *ec_fw_string = (char *) private; const char *dmi_data = (const char *)dm; /* * ThinkPad Embedded Controller Program Table on newer models * * Offset | Name | Width | Description * ---------------------------------------------------- * 0x00 | Type | BYTE | 0x8C * 0x01 | Length | BYTE | * 0x02 | Handle | WORD | Varies * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" * 0x0A | OEM struct offset | BYTE | 0x0B * 0x0B | OEM struct number | BYTE | 0x07, for this structure * 0x0C | OEM struct revision | BYTE | 0x01, for this format * 0x0D | ECP version ID | STR ID | * 0x0E | ECP release date | STR ID | */ /* Return if data structure not match */ if (dm->type != 140 || dm->length < 0x0F || memcmp(dmi_data + 4, "LENOVO", 6) != 0 || dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || dmi_data[0x0C] != 0x01) return; /* fwstr is the first 8byte string */ strncpy(ec_fw_string, dmi_data + 0x0F, 8); } /* returns 0 - probe ok, or < 0 - probe error. * Probe ok doesn't mean thinkpad found. * On error, kfree() cleanup on tp->* is not performed, caller must do it */ static int __must_check __init get_thinkpad_model_data( struct thinkpad_id_data *tp) { const struct dmi_device *dev = NULL; char ec_fw_string[18] = {0}; char const *s; char t; if (!tp) return -EINVAL; memset(tp, 0, sizeof(*tp)); if (dmi_name_in_vendors("IBM")) tp->vendor = PCI_VENDOR_ID_IBM; else if (dmi_name_in_vendors("LENOVO")) tp->vendor = PCI_VENDOR_ID_LENOVO; else return 0; s = dmi_get_system_info(DMI_BIOS_VERSION); tp->bios_version_str = kstrdup(s, GFP_KERNEL); if (s && !tp->bios_version_str) return -ENOMEM; /* Really ancient ThinkPad 240X will fail this, which is fine */ t = tpacpi_parse_fw_id(tp->bios_version_str, &tp->bios_model, &tp->bios_release); if (t != 'E' && t != 'C') return 0; /* * ThinkPad T23 or newer, A31 or newer, R50e or newer, * X32 or newer, all Z series; Some models must have an * up-to-date BIOS or they will not be detected. * * See http://thinkwiki.org/wiki/List_of_DMI_IDs */ while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { if (sscanf(dev->name, "IBM ThinkPad Embedded Controller -[%17c", ec_fw_string) == 1) { ec_fw_string[sizeof(ec_fw_string) - 1] = 0; ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; break; } } /* Newer ThinkPads have different EC program info table */ if (!ec_fw_string[0]) dmi_walk(find_new_ec_fwstr, &ec_fw_string); if (ec_fw_string[0]) { tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); if (!tp->ec_version_str) return -ENOMEM; t = tpacpi_parse_fw_id(ec_fw_string, &tp->ec_model, &tp->ec_release); if (t != 'H') { pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", ec_fw_string); pr_notice("please report this to %s\n", TPACPI_MAIL); } } s = dmi_get_system_info(DMI_PRODUCT_VERSION); if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { tp->model_str = kstrdup(s, GFP_KERNEL); if (!tp->model_str) return -ENOMEM; } else { s = dmi_get_system_info(DMI_BIOS_VENDOR); if (s && !(strncasecmp(s, "Lenovo", 6))) { tp->model_str = kstrdup(s, GFP_KERNEL); if (!tp->model_str) return -ENOMEM; } } s = dmi_get_system_info(DMI_PRODUCT_NAME); tp->nummodel_str = kstrdup(s, GFP_KERNEL); if (s && !tp->nummodel_str) return -ENOMEM; return 0; } static int __init probe_for_thinkpad(void) { int is_thinkpad; if (acpi_disabled) return -ENODEV; /* It would be dangerous to run the driver in this case */ if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) return -ENODEV; /* * Non-ancient models have better DMI tagging, but very old models * don't. tpacpi_is_fw_known() is a cheat to help in that case. */ is_thinkpad = (thinkpad_id.model_str != NULL) || (thinkpad_id.ec_model != 0) || tpacpi_is_fw_known(); /* The EC handler is required */ tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); if (!ec_handle) { if (is_thinkpad) pr_err("Not yet supported ThinkPad detected!\n"); return -ENODEV; } if (!is_thinkpad && !force_load) return -ENODEV; return 0; } static void __init thinkpad_acpi_init_banner(void) { pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); pr_info("%s\n", TPACPI_URL); pr_info("ThinkPad BIOS %s, EC %s\n", (thinkpad_id.bios_version_str) ? thinkpad_id.bios_version_str : "unknown", (thinkpad_id.ec_version_str) ? thinkpad_id.ec_version_str : "unknown"); BUG_ON(!thinkpad_id.vendor); if (thinkpad_id.model_str) pr_info("%s %s, model %s\n", (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? "IBM" : ((thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) ? "Lenovo" : "Unknown vendor"), thinkpad_id.model_str, (thinkpad_id.nummodel_str) ? thinkpad_id.nummodel_str : "unknown"); } /* Module init, exit, parameters */ static struct ibm_init_struct ibms_init[] __initdata = { { .data = &thinkpad_acpi_driver_data, }, { .init = hotkey_init, .data = &hotkey_driver_data, }, { .init = bluetooth_init, .data = &bluetooth_driver_data, }, { .init = wan_init, .data = &wan_driver_data, }, { .init = uwb_init, .data = &uwb_driver_data, }, #ifdef CONFIG_THINKPAD_ACPI_VIDEO { .init = video_init, .base_procfs_mode = S_IRUSR, .data = &video_driver_data, }, #endif { .init = kbdlight_init, .data = &kbdlight_driver_data, }, { .init = light_init, .data = &light_driver_data, }, { .init = cmos_init, .data = &cmos_driver_data, }, { .init = led_init, .data = &led_driver_data, }, { .init = beep_init, .data = &beep_driver_data, }, { .init = thermal_init, .data = &thermal_driver_data, }, { .init = brightness_init, .data = &brightness_driver_data, }, { .init = volume_init, .data = &volume_driver_data, }, { .init = fan_init, .data = &fan_driver_data, }, { .init = mute_led_init, .data = &mute_led_driver_data, }, { .init = tpacpi_battery_init, .data = &battery_driver_data, }, { .init = tpacpi_lcdshadow_init, .data = &lcdshadow_driver_data, }, }; static int __init set_ibm_param(const char *val, const struct kernel_param *kp) { unsigned int i; struct ibm_struct *ibm; if (!kp || !kp->name || !val) return -EINVAL; for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { ibm = ibms_init[i].data; WARN_ON(ibm == NULL); if (!ibm || !ibm->name) continue; if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { if (strlen(val) > sizeof(ibms_init[i].param) - 2) return -ENOSPC; strcpy(ibms_init[i].param, val); strcat(ibms_init[i].param, ","); return 0; } } return -EINVAL; } module_param(experimental, int, 0444); MODULE_PARM_DESC(experimental, "Enables experimental features when non-zero"); module_param_named(debug, dbg_level, uint, 0); MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); module_param(force_load, bool, 0444); MODULE_PARM_DESC(force_load, "Attempts to load the driver even on a mis-identified ThinkPad when true"); module_param_named(fan_control, fan_control_allowed, bool, 0444); MODULE_PARM_DESC(fan_control, "Enables setting fan parameters features when true"); module_param_named(brightness_mode, brightness_mode, uint, 0444); MODULE_PARM_DESC(brightness_mode, "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); module_param(brightness_enable, uint, 0444); MODULE_PARM_DESC(brightness_enable, "Enables backlight control when 1, disables when 0"); #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT module_param_named(volume_mode, volume_mode, uint, 0444); MODULE_PARM_DESC(volume_mode, "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); module_param_named(volume_capabilities, volume_capabilities, uint, 0444); MODULE_PARM_DESC(volume_capabilities, "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); module_param_named(volume_control, volume_control_allowed, bool, 0444); MODULE_PARM_DESC(volume_control, "Enables software override for the console audio control when true"); module_param_named(software_mute, software_mute_requested, bool, 0444); MODULE_PARM_DESC(software_mute, "Request full software mute control"); /* ALSA module API parameters */ module_param_named(index, alsa_index, int, 0444); MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); module_param_named(id, alsa_id, charp, 0444); MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); module_param_named(enable, alsa_enable, bool, 0444); MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ /* The module parameter can't be read back, that's why 0 is used here */ #define TPACPI_PARAM(feature) \ module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") TPACPI_PARAM(hotkey); TPACPI_PARAM(bluetooth); TPACPI_PARAM(video); TPACPI_PARAM(light); TPACPI_PARAM(cmos); TPACPI_PARAM(led); TPACPI_PARAM(beep); TPACPI_PARAM(brightness); TPACPI_PARAM(volume); TPACPI_PARAM(fan); #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES module_param(dbg_wlswemul, uint, 0444); MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); MODULE_PARM_DESC(wlsw_state, "Initial state of the emulated WLSW switch"); module_param(dbg_bluetoothemul, uint, 0444); MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); MODULE_PARM_DESC(bluetooth_state, "Initial state of the emulated bluetooth switch"); module_param(dbg_wwanemul, uint, 0444); MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); MODULE_PARM_DESC(wwan_state, "Initial state of the emulated WWAN switch"); module_param(dbg_uwbemul, uint, 0444); MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); MODULE_PARM_DESC(uwb_state, "Initial state of the emulated UWB switch"); #endif static void thinkpad_acpi_module_exit(void) { struct ibm_struct *ibm, *itmp; tpacpi_lifecycle = TPACPI_LIFE_EXITING; list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers) { ibm_exit(ibm); } dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); if (tpacpi_inputdev) { if (tp_features.input_device_registered) input_unregister_device(tpacpi_inputdev); else input_free_device(tpacpi_inputdev); kfree(hotkey_keycode_map); } if (tpacpi_hwmon) hwmon_device_unregister(tpacpi_hwmon); if (tpacpi_sensors_pdev) platform_device_unregister(tpacpi_sensors_pdev); if (tpacpi_pdev) platform_device_unregister(tpacpi_pdev); if (tp_features.sensors_pdrv_attrs_registered) tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); if (tp_features.platform_drv_attrs_registered) tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); if (tp_features.sensors_pdrv_registered) platform_driver_unregister(&tpacpi_hwmon_pdriver); if (tp_features.platform_drv_registered) platform_driver_unregister(&tpacpi_pdriver); if (proc_dir) remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); if (tpacpi_wq) destroy_workqueue(tpacpi_wq); kfree(thinkpad_id.bios_version_str); kfree(thinkpad_id.ec_version_str); kfree(thinkpad_id.model_str); kfree(thinkpad_id.nummodel_str); } static int __init thinkpad_acpi_module_init(void) { int ret, i; tpacpi_lifecycle = TPACPI_LIFE_INIT; /* Driver-level probe */ ret = get_thinkpad_model_data(&thinkpad_id); if (ret) { pr_err("unable to get DMI data: %d\n", ret); thinkpad_acpi_module_exit(); return ret; } ret = probe_for_thinkpad(); if (ret) { thinkpad_acpi_module_exit(); return ret; } /* Driver initialization */ thinkpad_acpi_init_banner(); tpacpi_check_outdated_fw(); TPACPI_ACPIHANDLE_INIT(ecrd); TPACPI_ACPIHANDLE_INIT(ecwr); tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); if (!tpacpi_wq) { thinkpad_acpi_module_exit(); return -ENOMEM; } proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); if (!proc_dir) { pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); thinkpad_acpi_module_exit(); return -ENODEV; } ret = platform_driver_register(&tpacpi_pdriver); if (ret) { pr_err("unable to register main platform driver\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.platform_drv_registered = 1; ret = platform_driver_register(&tpacpi_hwmon_pdriver); if (ret) { pr_err("unable to register hwmon platform driver\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.sensors_pdrv_registered = 1; ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); if (!ret) { tp_features.platform_drv_attrs_registered = 1; ret = tpacpi_create_driver_attributes( &tpacpi_hwmon_pdriver.driver); } if (ret) { pr_err("unable to create sysfs driver attributes\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.sensors_pdrv_attrs_registered = 1; /* Device initialization */ tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, NULL, 0); if (IS_ERR(tpacpi_pdev)) { ret = PTR_ERR(tpacpi_pdev); tpacpi_pdev = NULL; pr_err("unable to register platform device\n"); thinkpad_acpi_module_exit(); return ret; } tpacpi_sensors_pdev = platform_device_register_simple( TPACPI_HWMON_DRVR_NAME, -1, NULL, 0); if (IS_ERR(tpacpi_sensors_pdev)) { ret = PTR_ERR(tpacpi_sensors_pdev); tpacpi_sensors_pdev = NULL; pr_err("unable to register hwmon platform device\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.sensors_pdev_attrs_registered = 1; tpacpi_hwmon = hwmon_device_register_with_groups( &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); if (IS_ERR(tpacpi_hwmon)) { ret = PTR_ERR(tpacpi_hwmon); tpacpi_hwmon = NULL; pr_err("unable to register hwmon device\n"); thinkpad_acpi_module_exit(); return ret; } mutex_init(&tpacpi_inputdev_send_mutex); tpacpi_inputdev = input_allocate_device(); if (!tpacpi_inputdev) { thinkpad_acpi_module_exit(); return -ENOMEM; } else { /* Prepare input device, but don't register */ tpacpi_inputdev->name = "ThinkPad Extra Buttons"; tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; tpacpi_inputdev->id.bustype = BUS_HOST; tpacpi_inputdev->id.vendor = thinkpad_id.vendor; tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; } /* Init subdriver dependencies */ tpacpi_detect_brightness_capabilities(); /* Init subdrivers */ for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { ret = ibm_init(&ibms_init[i]); if (ret >= 0 && *ibms_init[i].param) ret = ibms_init[i].data->write(ibms_init[i].param); if (ret < 0) { thinkpad_acpi_module_exit(); return ret; } } tpacpi_lifecycle = TPACPI_LIFE_RUNNING; ret = input_register_device(tpacpi_inputdev); if (ret < 0) { pr_err("unable to register input device\n"); thinkpad_acpi_module_exit(); return ret; } else { tp_features.input_device_registered = 1; } return 0; } MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); /* * This will autoload the driver in almost every ThinkPad * in widespread use. * * Only _VERY_ old models, like the 240, 240x and 570 lack * the HKEY event interface. */ MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); /* * DMI matching for module autoloading * * See http://thinkwiki.org/wiki/List_of_DMI_IDs * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads * * Only models listed in thinkwiki will be supported, so add yours * if it is not there yet. */ #define IBM_BIOS_MODULE_ALIAS(__type) \ MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") /* Ancient thinkpad BIOSes have to be identified by * BIOS type or model number, and there are far less * BIOS types than model numbers... */ IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); MODULE_DESCRIPTION(TPACPI_DESC); MODULE_VERSION(TPACPI_VERSION); MODULE_LICENSE("GPL"); module_init(thinkpad_acpi_module_init); module_exit(thinkpad_acpi_module_exit);
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